I would say there are too many Superhero RPs.

I understand the agitation with fandoms, though I don't fully agree with it. It's more about finding a good group to do them with and changing the canon to make it your own. When I do a fandom, it's because we've taken the setting and either 1. disappeared the canon characters, or most of them, and/or 2. taken a route so different from the canon that it's literally nothing but the most basic of concepts being the same (like an AoT RP would take the maneuver gear and base parts of the world, and then do something like spend all of its time exploring far beyond the walls).

I had a real complaint a few minutes ago... but I forgot... ;n; Hate when that happens.