Well, there are a lot of reasons why the rosters in fighting games aren't terribly huge. It becomes really hard to balance each character and ensure that the system does not allow infinite combos or glitches on certain characters or on all characters. Do you know what I mean?

You might want to trim the list down a little bit just to keep it realistic, even though it is just a thread for the creative flow of ideas. I'd recommend getting rid of a few obscure characters from the comics' universes, for example, Lola Bunny. Unless her planned skillset just had to be in the game, she'd probably be a waste of space!

I'm glad to see that you included some nice Capcom characters, though, but if you have Rose, you might as well have M. Bison.