I hope Nolan concentrates less on Bruce and more on the villain this time around.
Scarecrow should have been a much bigger focus in Begins because basically he and Bruce were reflections of each other; both of them spring from crippling childhood fear and both are seeking to control that fear. Except Bruce is using that control to harness his fear and benefit others; Scarecrow is using it to hurt others. But in many ways they are the same person.
I don't mean to put Nolan down or anything, but I think Tim Burton would probably have explored this more fully. The them of "the hero and villain reflect each other" was very much seen in Batman 1 and 2.
The Joker and Bruce were each other's dopplegangers; in Batman Returns the real theme is that Bruce is just as much a "freak" and outsider as The Penguin. (the fact that he and Oswald Cobblepot both spring from wealth is mentioned) No one is really on Batman's "side"'; not even the fickle citizens of Gotham who cheer Oswald and boo Batman, then abandon Oswald just as easily. Batman, like the Penguin, has been scarred by society as a child and will thus always remain alone.
After all, the Penguin says: "I think you're jealous that I'm a genuine freak, and you have to wear a mask."
Anyway, these are just my thoughts.

You can’t just have your characters announce how they feel! That makes me feel angry!