I'm hoping Nolan walks into to the execs room and says: "Guys, this is NOT Batman." Seriously, Superman can't be turned into what Begins and TDK were. That just isn't Superman.
I just love how people stereotype Nolan as this shallow director who thinks making movies dark and edgy makes them good. That's totally not the case. His movies show much more depth than that. He respects Batman, he'll respect Superman. That doesn't mean he'll make him what he's not.