I mean, if he actually does get cast in
Dark Knight Rises? Look at him. Dude is Dick Grayson. Or should be. Boy Wonder or Nightwing, I don't care.
Yeah, he'll probably be someone else - Hugo Strange, one of Bane's stooges, or just Cop #2. And I'm pretty sure Nolan has said he doesn't want Robin in his movies.
But still. Dude should be Dick Grayson.