One thing I would have liked to see in The Dark Knight Rises was a bit more of origin story for Bane. I would have liked to see what Nolan's version of his origin was. For the most part Bane's background was kind of a mystery, I thought maybe Nolan did that on purpose to keep the character mysterious like his take on The Joker. As it turns out, there were scenes that were shot of Bane's origin, but they ended up being cut out of the final movie edit.
Thanks to the film's costume designer, Lindy Hemming we now know a little bit more about Bane's background, and what we didn't see in the movie. Here's what she had to say in an interview with GQ,
The thing that you should have seen during that sequence is [Bane] being injured in his youth. So one of the fundamental things about his costume is that he has this scar from the back injury. Even if he hasn’t got the bulletproof vest on, he still has to wear the waist belt and the braces. In that scene in the prison, where he’s learning to fight the same way Batman learned to fight, he’s wearing an early version of his waist belt. It’s showing support, but it’s not the finished one he eventually wears. He’s also wearing an early version of his gas mask, all glued together … If you look at the film, unless they’ve cut it—and I’m sure they haven’t—there’s a whole early section for Tom Hardy where he’s fighting and being taunted by people. He’s got chains on him, and he’s standing on a wooden thing while people are attacking him. And in that scene, he’s wearing a much more ragged, primitive version of the mask.
She is then informed that the scene is not in the movie...
Well that’s an awful shame, but I suppose you have to cut things. I won’t elaborate on it too much, because it isn’t in the film, but there was another section that showed you why he had the mask and where it came from.
We can only hope that the scenes will be included as extras on the Blu-ray. The only reason I can think of why they really cut these scenes is to keep the misdirection of who the child really was in the prison, because we were supposed to think the kid was Bane. Well that, and the movie would have been over 3 hours long.