I love the Nolan films, but I'm looking forward to a new interpretation. There are other aspects of Batman lore to explore, and I think the end of The Dark Knight Rises is quite final.
I also think they could make an amazing live-action Batman tv show, but it probably won't happen because they'll want to do movies.
Of course it's open-ended with Blake taking over the cowl, but I think for a Batman film you'd have to have Bruce Wayne as Batman. Bringing Bruce back would undermine the ending of TDKR, so it's better to start fresh.
I also think they could make an amazing live-action Batman tv show, but it probably won't happen because they'll want to do movies.