I wouldn't mind Monolith, since I really enjoyed Condemned 1( 2 and FEAR less so, even though they were pretty solid too). I'd prefer a Batman Beyond or Superman game to another Arkham game, since Arkham City did everything so well and was a solid ending. I'm not a huge fan of the prequel angle either, which hasn't really done any favors for other series(God of War and Gears of War).