I was just thinking the other day how cool it would be if the next smash bros focused on good guy vs. bad guy more. You would still be able to fight good vs. good and bad vs. bad, but I can just picture a perfectly balanced character select screen with good guys on one half and bad guys on another.
That means I want things like Ridley, Andross (in some way I haven't figured out yet), Boo, Birdo, etc. to fill out the balance.