But he didn't need to. They would have been forced to reboot without that JGL bullshit anyway since NONE of the main players (Bale, Caine, Freeman, Oldman etc) would return without Nolan.
I really hated the inclusion of JGL's character.
It fits in with the idea of Batman being a symbol. Eternal. In the Nolanverse, we can now assume that, like Rhas Al Ghul, "Batman" is simply a persona which is taking up by a different man each generation.