“I don’t see why not. I mean, they did it with Katie Holmes’ character. I understand that this is a different circumstance, but I think another actor could do the job. I think Heath would want another actor to do the job.” Oldman then took a moment to think about it some more, “Maybe we don’t need the Joker. Because we’ll have The Riddler.”
Not too sure how to take this but could it be that The Riddler will step up as the next foe to face Batman! While its still a rumour about the 3rd Batman Film, Doctor Who himself David Tennant has expressed an interest to play the villain. Flicks News think's this would be a great casting choice and David Tennant would be a perfect fit into the Batman world. Plus a Christopher Nolan Riddler would be a sight to see as in the comics hes a bit rubbish and seen more as a loser villain so be cool to see him as a Keyser Söze of Gotham.