Re: Who should be the villain in the sequel for Man of Steel?
I could see this movie being a trilogy that's set up similar to the recent Batman reboot. Batman Begins = learning to be Batman, villian was from where Batman originated , The Dark Knight = bad-a$$ Batman + the villan was Batman's nemesis (Joker), and The Dark Knight Rises = villian was a mastermind imposing figure (Bane).
Following the same path, we already have MOS with Superman finding himself and fighting Zod, MOS2 could be against Lex Luthor arguably his arch enemy, and MOS3 would have him against the imposing and ruthless Brainiac.
Just my predictions.