Awesome+Greatness=This
Like i said in the title it is pretty much awesome, well anyways always room for improvment so here are some ideas
1. New charaters (Madness and Blockhead some one said which were good ideas)
2.More Unlockables (Like, Tom Fulp :D that would be funny)
3.More "evolved" storylines, or different story lines like "the path of good or bad" some crap like that
4.More strategy, it looked like you tried not to make this a simple button mashing game, and you did well, just at some points button mashing became a problem (from comps)
9/10 5/5 well nice job you did great also nice job on the "physics". huge charaters falling= other people flying :D