Suggestion: Make colors do more damage against certain chars

Group all the characters into different colors and make it so that certain colors deal more damage against other colors. This way, you can expect to have greater diversity in PvP by rotating out your roster to at least somewhat compete against theirs.

Wolverine (Green) -> 125% damage against Black (Loki)
Human Torch (Red) -> 125% damage against Green (Wolverine)

etc etc