The “Limiters” thing makes very little sense
So apparently Kawaki and the other Kara members all have finite stats that have to be tweaked one way or another? Like skill points on a video game? How convenient and entirely unentertaining. Why would you not simply give them more skill points to work with.
Furthermore, what would preclude Amado making Kawaki entirely harmless yet functionally immortal or vice versa? Stronger than anything yet dead in 2 minutes? And what exactly does “stronger” even mean in that context? Sharper claws, stronger arms, and hotter beams?
The concept of having installed raw limiters made more sense than him essentially being able to re-spec each of the Kara inners on the fly. And this seems like a gateway to more ridiculously ambiguous scaling.