We should have gotten more from the Karakura Superheroes post-timeskip.
Shit, we should have gotten more from I Hugo’s human friends pre-timeskip.

That was always one of my biggest issues with Bleach. For all of their technological advancements through Mayuri, and the seemingly just leadership of many of the captains, nobody was really trying to fix the societal problems with their power.
Like, you die and it’s just the same class disparity shit all over again.