I'm pretty late to the party, but here's my thoughts:
1. Same formula as The Dark Knight with a long setup for a great finish. The problem is that the setup was interesting in The Dark Knight, in TDKR, it was long and drawn out and didn't hold my interest at all. None of the stories were all that intriguing whether it was Wayne imprisoned, Bane wreaking havoc or the rise of Blake/Robin.
2. This was supposed to bring finality to Nolan's trilogy. The ending was really good, but it left the book open. I was far more intrigued with the possibilities Nolan left open than the movie I just finished watching.
3. Stupid crutch plot twist that isn't needed in a Batman movie. I'm not sure if the story borrows from a graphic novel but it felt like Nolan knew that Bane was a minor character and threw in the plot twist. It might have been more interesting if Marion was built up a little more, but just like Catwoman and Blake, there wasn't much on the character development front. They used over 2 hours to build up Bane's character and then made him inconsequential.
4. I really wanted to see Nolan's take on the Riddler before he left the franchise. When Bane was announced, I was ok with the choice but Nolan just didn't do a good job. No fault of Tom Hardy, he was pretty good. I would have loved to see a dark version of The Riddler as a serial killer. That said, after Nolan's trilogy which in the grand scheme of things was the most in-depth version of Batman ever put on screen, I can't see any studio green lighting a return to the Schumacher's Batman or even Burton's version (even though Burton's is still my favorite). I think Riddler fans will get the movie we want to see someday.