Here is my point of you what could have happened:-
Hashirama and Mito failed to seal Kurama in Mito. Kurama sacrificed his chakra which was sealed while his body and soul escaped. After years, Kurama has completely recovered all his chakra. Hashirama and Mito know that Mito is not a real jinchuriki, but they lied to the others. The chakra that will be transferred to Kushina is the one that Mito kept. Kurama is free and hates humans. Now after years he can take revenge on Hashirama, Madara and Mito and the best way is to destroy Konoha. Hashirama and Mito are dead and as far as Kurama knows, there is no way to seal him without weakening him with Mokuton. He doesn't know that Shinigami can be called to do so. On the way to Konoha Kurama attacks other villages and causes massacres. This however infuriates the goddesses(kami,yami,shinigami) because humans have done nothing to deserve this. Here it's not Obito who has Kurama attack Konoha under genjutsu, it's Kurama who has become too evil and corrupt to attack innocent people for no reason. The goddesses cannot interfere directly without being invoked, but they have heard the prayers of Kushina, Minato and the inhabitants of Konoha who have discovered that the Kyubi is coming to destroy them. The punishment that the goddesses will give to Kurama is worse than what happens in the canon story. First Kushina and Minato will stay alive because Kushina has the other Kyubi chakra to heal her and the goddesses don't want Minato dead. Kurama will be trapped in Naruto, but he no longer has control over his chakra. His chakra has been purified and Naruto can use Kcm (and better versions) with ease without Kurama deciding anything. Furthermore, Kurama is forced to become a sword that Naruto can summon. The sword can absorb chakra, even nature chakra automatically and give it to Naruto. If the sword absorbs chakra from people with Kekkei genkai it can give those kekkei genkai to Naruto who will then pass them on to his children. Naruto can use the chakra absorbed into the sword, either his own or Kurama's, to power the sword. The sword can use any type of chakra. Naruto is always the reincarnation of Ashura but in this he can have more kekkei genkai. Also as punishment Kurama is trapped eternally in Naruto. Naruto has absorbed Kurama's abilities becoming immortal when he reaches a certain age and is promised by the goddesses that up to four wives will be immortal after becoming his wives. The reaction of the inhabitants of Konoha is different from the canonical one. Minato and Kushina explain what actually happened and the population knows that Kyubi is imprisoned for eternity and that Naruto has great power now. The population has no problem with Naruto because Kurama has no chance to corrupt him and with the help of Minato and Kushina, Naruto becomes very strong. The sword is very useful because thanks to Kurama's chakra Naruto is much more resistant and the enemy's chakra is absorbed. Also nature chakra will help when learning sage mode. Here there was no sharingan in kyubi's eyes so there shouldn't be any problems with the Uchihas of the village. Maybe a sister of Sasuke or a female version of him can join Hinata, Ino and Temari. Akatsuki exists, but this Naruto is quite a bit stronger and can absorb the chakra and kekkei genkai they have. To understand better I need to explain this. If Naruto absorbs the chakra of one of the Uchiha he obtains the sharingan and possible mangekyou or eternal and the jutsu of those eyes, but if he then also absorbs the chakra of other Uchiha he also adds other abilities. This also with other things. At the end of the story Naruto will have various kekkei genkai with also byakugan, eternal mangekyou and rinnegan. Maybe even that of juubi and Kaguya or even if you bring the story to the Otsutsuki even more.