David was long rumoured and seemed to be the internet choice to be Batman in "Batman Begins". I know he was my secondary pick after Christian Bale. I don't know that David would be interested at all. Bryan Crantson is also my choice for Jim Gordon. I kind of like the idea of Arnie Hammer as Bruce. It's difficult for me since we really don't have any real details of the direction Warner Bros is going in right now.
I'd wish we get a live action "Batman Beyond" adaptation like they were considering doing back in 2001/02. To me this is pretty much the last frontier where Batman's mythos is concerned that hasn't been explored in film yet.