Half-formulating a platform fighter concept, mildly inspired by Nexed being made, though I dunno where to put it fully or to focus all of my attention on it. Basics of it:
Mixes in some Marvel VS CAPCOM style mechanics. You can switch out characters in teams (which are adjustable, like SkullGirls), and use either assists from your team, a specialized assist for your character (similar to the MUGEN game Famicom Fighters), or a randomized one. Supers are levelled like MVC/TVC/what-have-you, and Assists can also be super-charged in conjunction with a full meter, as well, and some have certain Supers with specific characters.
Roster-wise, it'd be fairly Umbrella-Game-ish, though like Pop Culture Clash, characters would mainly be in the different categories of Video Games, Comics, Cartoons, Anime/Manga, TV, Movies, Books, and Everything Else. It'd be a mix of iconic characters, strange characters, and whatever else I feel like putting in or making a moveset for.