The main problem I have with it is that they all saw the damn explosion to be that close, no radiation poisoning?
I don't like either interpretation of the ending. If Bruce died that would be alright, if he had actually been Batman for more than a few months (with an 8 year break in between), but him dying and leaving a cop he had relatively little to do with as his successor isn't right. If Blake was Robin, Robin has only ever been a partner to Batman. If Blake was meant to be the next Batman, which would mean Bruce meant for him to take over, then it means Gotham still needs Batman so why would Bruce fake his death so he can live somewhere else? Bruce Wayne is Batman, nearly every story about Batman has had anyone else fail at being Batman. And in the Dark Knight, he gets angry at the copycats yet copycat Blake is alright by him?
If there was another sequel, Bruce would surely come back, Robin could not hold a film on his own.
The point is the other two movies had Wayne 'destined to do this forever' which keeps in line with all Batman stories, then this one contradicted all that. And his identity being revealed was also very un-Batmanlike.
And it is implied he left Gotham because there was nothing for him there after Rachel's death, so what? Does that mean he only came back for Rachel? Because he said he wanted to inspire people and continue his parent's legacy. Since Blake is going to be a new vigilante he obviously thinks Gotham still needs a hero, so why run away? There's never been anything for Wayne in Gotham, he's there to protect the people. I just found it very out of character for Bruce Wayne to fake his death, leave Gotham and live with Catwoman in some city just so he didn't have to be Batman anymore. And I also found it out of character for Bruce Wayne to lead Alfred into believing he failed Bruce's parents, after everything Alfred did for him I would have thought Bruce may have spared him the obvious grief it would have caused.