[Gexmeister]

At first, it sounds crazy, but then it kinda makes sense. It'd fit thematically.

Besides, as kedrell said, there are always gonna be more Batman-movies, so it's not like they'd be killing him off permanently, just for the Nolan series. That'd also be a good way to make sure that this particular series does not continue. We all know what would happen otherwise, the movies after the third would inevitably start veering more into the fantastical.