I haven't seen much of Nolan's work (I keep meaning to see Memento. I hear it's a masterpiece), but I love reading what he says during interviews and such. I have much respect for the man. He has an impeccable understanding of the art of film-making. He and his whole team that he surrounds himself with. And beautiful cinematography (yay for this film being 100% IMAX!!)
Batman Begins and The Dark Knight are two of my favourite films. Back when the title was first announced, I was disappointed. And I still am. It's goofy. The Empire Strikes Back is a terrific film. Much like The Dark Knight it was darker than it's predecessor and had a cliff-hanger ended and left audiences wanting more. But they didn't called Return of the Jedi "The Empire Strikes Back Some More".
I was really hoping that Harley Quinn would be a character. A transition from the Joker (don't show him, for obvious reasons, but maybe have unused audio from the last film to create interview sessions between him and Dr. Quinzel behind closed doors at Arkham).
Catwoman, I think is a boring character. However, Nolan sure has balls to use the character after that Halle Berry disaster-of-a-film. I know it won't be anything like that interpretation (or Burton's, which is my main complaint. Burton already used the character. I know it's separate continuities, but I only wanted the Joker to carry over - he's a constant), but I don't think the bad taste has left audiences mouths yet (for the three of you who actually saw that movie XD).
Hathaway can play dark though. So, I am intrigued. Hardy as Bane, is also interesting. I'm confident they're going to play up Bane's intellect over his brawn (and lose the mask please). And... Catwoman isn't really a villain. Just an anti-hero, sorta. And she'll probably be Bruce's new love interest.
Personally, I think a combination of Bane and Hugo Strange as the villains could work well.
And Live_Wire466, it is the end of a trilogy, yes. Nolan is done with the series after and walking away. Similarly, much of the cast probably won't return without Nolan. WB could probably continue this continuity if they wanted, but it would be different sans-Nolan. Nolan and co. have said they writing it as an ending to their trilogy.