Actually, it would be something to have Michael C Hall as some villain opposite the Bale.
Shariq, you should be a casting agent. That's brilliant.
If I were Nolan (which I'm not, yet) I would throw the comic book villains out of the window, and create an original villain with Michael C. Hall in mind. Yes, that is what I would do.
He's earned the respect of the fans to do so too.
Batman:TAS created characters - so could
Nolan, with more fanfare.