I will say that I am not excited about Anne Hathaway being in this film. Sure I'd throw it in her, but I'm not impressed with her acting OR her choice in movies to perform in (stay away from Jake Gyllenhaal, he is acting kryptonite).
I really shouldn't question Nolan's decisions though. Once upon a time, I thought Heath Ledger playing the Joker was the worst idea ever. :)