Ah, and I didn't mention my thought on villain. If this is Nolan's final movie, I think he'll bring in Talia in order to take things full circle. Hugo Strange also seems like a safe bet given the Gotham PD trying to hunt down Batman.
The film really needs a headliner, flashy villain though; even Begins had Scarecrow after all. I halfway expect Nolan to try and combine Talia and Catwoman similar to the way he combined Ducard
and Ra's al Ghul.