Riddler, Hush and Joker already got one. Even Catwoman seems more threatening now. I'm just waiting for Bane, and R'as.The rest can just form a little team like the Rogues, and it would work just fine, in my mind.
@bat_girl_cc: Fights are in character thought, if Slade loses for being a smarmy bastard then he will always lose for being a smarmy bastard. I mean part of the reason Batman even stands a chance is sheer willpower.
@outside_85: The excuse is that the characters are already at a place in which they follow Superman. They already followed him in Year One for some unexplained reason. Now it's just about watching how the pieces move from there.