I think that this game might be better with a Negative Edge system for Specials and Hypers, though if we're trying to resemble brawlers a little more, I can understand why it's not there;
http://www.chronocrash.com/forum/index.php?topic=4600.msg63874
Also, I did NOT expect Edi. E to be a playable character, just another boss. But now that he is, I suggest his second Team-Up Hyper use a police car, which he can shoot from. I like how he and his minion Dug take turns hitting the foe for his first Team-Up Hyper.