Hello there, this is going to be a short explanation of what I've changed or added to the world of Remnant. I do apologize if something sounds wrong or weirdly worded, I'll try to make sense of it all. If you think changing how something works is a good idea, feel free to share it so I might get more and better ideas.

And as a side note, I am basing this almost completely off the animated series of RWBY, so if there is any inconsistency between my world and the non-animated canon then sorry, not sorry.

The first thing affected is the system that aura is under. (I'll do it in a bullet system to give a comprehensive list. This list will include both new and original parts of aura, or at least how I understood it)

Aura is like a muscle, the more it is used the denser it gets, with more piling on. Some people have a limit their body can hold, but others (like team RWBY, JNPR, my team, and most of the important characters) are capable of holding more and more, potentially rivaling the Maiden's capacity one day (but that would take time and dedication to purely improving capacity, while the Maiden's are capable of gathering more power in the same way)

The more aura someone has, the slower it is to increase/improve, and that applies to all characters

There are items/methods to increase the regeneration rate or instantaneously replenish the lost aura. The downside to these items is that the faster it regenerates aura, the more potentially deadly it is to use. (And for instantaneous recovery, the more recovered is the flag for how deadly it is)

As a very high level and taxing move, aura can be physically used outside of the body as pure aura, taking on the color of the users' natural aura (this same aura can be used either as pure aura and use less of the person's aura, or it can be used as their semblance aura, which allows them to put their semblance into the construct, but this takes more aura) (the more this is used, the "less" aura is consumed while doing so because they become more proficient in it)

The aura shield that someone possesses is a consciously made barrier with their aura. This is step 0 in using one's aura, so it is basically a natural reflex dependent on the user's reaction speed. This shield comes out all over the body, but the amount of aura it takes to have it activated at all times (without actually using the shield for protection) is negligible, meaning almost everyone's natural aura regeneration is enough to bypass the constant shield. Once someone is able to use it well enough, they can unconsciously keep a shield up at all times (or at least whenever danger is sensed as a first reaction), though the cost doesn't go down by much (this is a learned skill, like being able to do the splits, some people can naturally do it, and others just have to train a certain amount to be able to do it).

With enough training, the aura shield can be moved around and concentrated on specified parts of the body, and in some cases slightly away from the body in an anchored position (though this is highly aura taxing because of it not being directly connected to the body)

All aura users have a natural "danger sense", not exactly like a spidey sense because it only tells there is danger somewhere around/incoming. The more aura one has, the more "accurate" the danger can be felt (like if a pistol does 10 damage and a sniper does 100 damage, a higher level aura user would be able to tell the two damage levels apart while a lower level would only be able to tell there is danger).

Aura outside of the body is treated like energy when physics is related and has a max speed of light (this means that the more solid it is, the slower it will move. So to interact with another object/person it will still only be able to go so fast) (it has a limited distance though, so regardless of speed it can only go so far)

Aura naturally increases one's physical capabilities as time passes (the more aura, the better the capability becomes), and there is an active physical enhancement, but the body can only handle so much before it starts breaking down (if used too much or too often improperly, it will cause permanent damage or death)

Aura can be conducted through objects like electricity, and the best conductor for that is silver