Okay, I can't do it. I have way too many different ideas that I cannot put into words. Everytime I try to type them out as part of the story, I don't like what I put down. You guys can make your own version of this if you want but I am unable to continue.
Here's some explanations for different ideas I had for the story, had I actually got to that point. You can use them if you want.
1. During his time with the Green Lanterns, Vahl would take advantage of his Kryptonian biology to actually patrol the Vega System. All he had to do was deactivate and hide his ring. (This is b/c of the deal between the Guardians and Larfleeze. Green Lanterns were not allowed to patrol the system so long as Larfleeze did not leave). He would of become something of a legend across the System because of this.
2. While on Earth, Vahl would only stop sexual and trafficking crimes. Outside of that, he does not go out of his way to help unless it's in front of him or involves someone he cares about. This is to showcase the fact that he IS NOT A HERO. He, for all his power, considers himself just another person in the universe. If it's not destroying a planet, he's not going to care much.
3. He would discuss with Superman the simultaneous genius and stupidity of his secret identity. (Clark Kent is just a guy, and no one knows the face of a random reporter, but at the same time, Clark Kent is getting almost all the stories about Superman.) "If it weren't for the fact that no one expects you to have one, your civilian identity would have been discovered a long time ago, Kal-El."
4. In a discussion with Lex Luthor (I really don't know how they'd get together without trying to beat the shit out of each other), Vahl would agree that humanity was far too dependent on Superman, but would point out the stupidity of trying to kill one of the planet's greatest defenders. "Your time is better spent actually helping humanity, Luthor." While not giving specifics, he would explain that Superman had been raised since infancy on Earth, by human parents. "In other words, Luthor, Kal-El is very invested in protecting HIS HOME. He is a resident, not a visitor, and certainly not a conqueror." "What are you then, Valor?" "...I'm a tourist."
5. Call Batman out on his 127 Martial Arts bullshit. "You are a baseline human. Even with your IQ, you do not have the brainpower to retain all that. Throughout your crime fighting career, your mind and body would have discarded any useless movement as your fighting style evolved to what it is now. And beyond that, there isn't actually that many martial arts. There a handful of them, with dozens of slightly different knock-offs. Same thing happens on every planet. You literally only say that as part of your intimidation tactics - which doesn't work on me, because while I acknowledge and respect your combat skills and intelligence, I have seen and experienced far scarier things than a man in a kevlar suit."
6. A scene in which during an interrogation by the Justice League, he mocks their inferior red solar lamps. "This may work on Kal-El, but I have millenia's worth of solar energy. If I wasn't paying attention, I wouldn't have even realized you turned them on."
7. Incredible frustration at his fellow Kryptonians inability to see through lead. "If that part of our powers was actual X-Rays, you would be giving everyone Super-Cancer. Yes, we CAN emit X-Rays from our eyes, but the default is NOT THAT. Your inability to see through lead is a subconscious limitation created from a inaccurate understanding of your powers."
8. A combination of intrigue, fear, and absolute confusion at the fact that the Speed Force is apparently a safe-ish way of time travel (safe as in you won't destroy the universe if you change things). Remember, in this story, there aren't alternate timelines or a multiverse - if you screw up with time travel(like meeting yourself or stopping the reason you time travelled in the first place) the universe resets, Big Crunch style.
9. Vahl-Or, with a better understanding of paradoxes, would have tried saving the people of Krypton, while still letting the planet blow up. Unfortunately, he and Sector 2813's Green Lantern would be blown off course by a supernova. Given the nature of Kryptonian powers, the cosmic explosion, while not actually damaging him, would result in an incredible amount of pain, leaving him catatonic for several days.
10. It would eventually be revealed that Green Kryptonite, and most forms of Kryptonite, for that matter, no longer affect Vahl in any meaningful way. The sole exception is Gold Kryptonite, which would be explained as reducing the maximum amount of solar energy a Kryptonian can hold in their body(this metaphorical ceiling raises both over time and through usage of powers). This, however, means very little, as Vahl-Or and Superman have both individually created antidotes to Gold K. (In Superman's case, this is canon to the comics)
11. An eventual reveal that Vahl-Or's change into the golden-skinned "Kryptonian Prime", was far more complicated than simply absorbing a great amount of solar energy over time. It involved a bunch of other absorbed energies, and was essentially a luck-based event that no one saw coming, and cannot be reproduced. Were it not for this change, Vahl-Or would be very old at this point, with only a few decades left to his life. At the time of the change, Vahl-Or had been the equivalent of a human 52-year-old, and was rapidly rejuvenated into the equivalent of a 25-year-old.
12. Doomsday reappears, and rather than fight him, Vahl-Or stays in place, talking to Superman "casually", while Doomsday attempts pummels him in vain. "This is not a sapient being, Kal-El. It is a ravenous, mindless beast that knows only pain and death. Your unwillingness to go all out is irrational. You could have ended it for good a long time ago, but you held back because of its humanoid shape. It is not one of your misguided villains. It is pitiful creature that knows only misery. Killing it is a mercy." He then proceeds to throw Doomsday into the Sun, while also blasting it with Heat Vision to destroy every last cell.
13. The New Gods, due to this being a No-Multiverse story, would not exist in a higher plane. There aren't avatars or anything like that. Their predecessors, the Old Gods, would have been powered by a 'God-Source', which gave them a connection past the Source Wall, granting them their powers. The war that split the planet into New Genesis and Apokolips and created the God-Wave would have been over this.
14. Earth was on the very edge of the Godwave, and is anomalous in the sheer number of Gods that formed here. Gods spawned by the Godwave were formed from human belief, and most planets only got a pantheon or two. Earth, with minimal energy from the Godwave, got several. This is part of the reason Hecate (one of the few 'True Gods', formed w/o the God-Source or the Godwave), chose to live on Earth, despite being a universally-worshipped Goddess.
15. Vahl-Or's second homeworld, Lacorsis(not a canon planet, I just made it up), would be inhabited by a four-armed species with green skin. Similar to Superman, he would grow up a farmer, but would actively use his powers to help out the town he grew up in. (No use hiding it when everyone knows who he is). This would continue... until the planet was invaded by Darkseid.
Yeah, that's pretty much all I could keep track of. I couldn't decide how to get to these or anything. If y'all want to use this stuff for your own stories, go ahead. (Maybe leave a comment leading to those fics. I like reading a lot, sue me.)
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More random scenes.
Captain Marvel: Ok, I know you were tired and holding back, but why should we be afraid of you? We could just send you to the Phantom Zone like Zod's crew.
Vahl: [Wisdom of Solomon, my ass] Besides the fact I could dodge the beam? *raises a coin of Nth Metal* Cimim Eciov, Levram Niatpac.
C: What does that even-
V: MAZAHS! *thunder*
Billy Batson: ...What.
V: *sits down to hide how tired that made him* One karate chop later, you're out of commission.
Wonder Woman: I don't trust him.
Vahl: *no fucks given* Is it a general You-hurt-me-and-my-teammates distrust, oooooor a you-beat-up-my-boyfriend-and-must-die distrust?
Plastic Man: *spittake*
WW: Wha-
V: Did you expect me to wizard-fancy-talk the whole time? I've been on the internet, I know how to speak English.
Blackfire + Starfire: You're real?!
Vahl: *pats self* I feel pretty real.
*Later, after hearing Blackfire's backstory*
Vahl: *sick of superstition* I swear to fucking Rao. There must have been THOUSANDS of babies born that day, but of course only the royal with a different hair color is considered cursed. This is the planet and lineage I risked my eternal soul for!
Blackfire: ...Wanna help me burn the palace?
Starfire: Komand'r, no!
Blackfire: Komand'r, YES!
Vahl: I can pull the "disappointed and pissed off hero" act on your parents in front of their court. A life of shame is way more punishing than a sudden death.
Starfire: ...What the fuck.
Simon Baz: You can't expect us to let Laminski go!
Vahl: The only thing he's done with the Green ring is help people. I don't think he really needs to be imprisoned for that.
Jessica Cruz: The Guardians-
Vahl: Besides Ganthet, I don't give a flying fuck what the Guardians think. Last time I checked, they aren't in charge of Earth. Your people don't like it when other countries imprison their fellow citizens. How do think the world will react when I tell them you took a regular person off planet at the word of a bunch of little blue men?
Baz: He stole the ring!
Vahl: Plastic Man was a bank robber! Batman beats up the mentally ill! The sidekicks are modern examples of child soldiers! And don't get me started on the Amazons! Stop acting like all your heroes are perfect examples of morality! At least Laminski acted like a hero instead of a pair of obedient little sheep!
Drones: [Green K Ray online]
Zod: What are you doing?
Vahl: I honestly thought I could get you, ya know. You'd be out of Kal-El's hair and Kandor would have a military leader. But the fact of the matter is, you are a complete psychopath. You don't care about anything but your own glory. You're too dangerous to let under a blue star.
Zod: So what, you'll murder me with these machines?!
Vahl: HA! Whoever said this was an execution, Druzie?
Drones: [Gold K Ray online]
Vahl: You're still coming with me, but I'm making damn sure you can't cause any more trouble. But until then *raises handheld shrink ray* which color snowglobe would you like to be frozen in?
*when exposed to Silver Kryptonite*
Vahl: *slowly rotating in midair* I can see every equation! Awesome!
Batman: How long has he been like this?
Flash: About 3 hours.
Blue Beetle: The most dangerous being in the universe is high. This isn't gonna end well, is it?
Black Adam: *has stolen one of the five Witchmarks of Hecate, and gained a power-up from Trigon*
Vahl: This could do it. This could actually, legitimately kill me.
Suit: [Red K, Variant Bahamut activated. Red K, Variant Gigante activated. Octarine K activated]
Vahl: *becoming a giant, magic fueled dragonoid* Bring it, bitch.
(Octarine Kryptonite basically overloads a Kryptonian with magic. Too much = Kaboom)
Bizarro: Goodbye!
Vahl: ...What.
Biz: Me am Bizarro.
Vahl: ...I can experience months in the span of seconds, and that still isn't enough to process whatever the fuck this is, biologically. [His DNA is backwards. He should a mess of goo or squid-lion or something, not Stoneskin Kal.]
Krypto: RUFF
Vahl: I have known you for 5 seconds, but if anything horrible happened to you, I would kill everyone involved.
H'el: Clonesies!
Superboy: No.
H'el: But-
Superboy: NO.
Zatanna: So you backwards talk, too?
Vahl: I'm a better enchanter than a logomancer, but yes.
Wonder Woman: You are selfish and show no care about the way you treat others, you despicable-
Vahl: Your entire culture sustains itself through r***, murder and infanticide, while hypocritically condemning those things if done by anyone with a d*** between their legs, which really isn't surprising given half the shit your patron pantheon does. I give zero fucks about your opinion, princess.