Before I get this out, let me say, I loved the film. Loved it! However, it could have been MUCH BETTER if it was split into a two-parter. A few things I would have done, keep in mind these changes are made in mind that the film is a two-parter:
-More build up amongst everyday citizens, seeing the new day-to-day life of Gotham Post-Dent Act and build up the rumors about Bruce Wayne's shut-in lifestyle, making his first appearance much more dramatic.
-A much more believable reason for Blake discovering Batman's true identity
-More breathing room for some of the more dramatic scenes(Alfred and Bruce conversations, Gordon and Bruce Hospital scene
-A much longer police chase with Batman and the Batpod
- The fight scene with Batman, Catwoman and Bane's goons on the roof top much longer.
- More of Batman and Catwoman fighting Bane's henchmen in the sewer prior to Batman and Bane's first battle.
-Bruce doesn't allow Miranda to take over the company. Lucious makes this decision after Bruce appears to be dead.
-A much more in-depth look at Bane's Revolution
-More prison scenes with Bruce. It is still hinted to the audience that Bane is the child in the legend, but Bruce never expresses this belief.
-Alfred is involved in Bruce's return to Gotham, as a parallel between the plane scene in Begins.
-A Much Bigger and longer "War For Gotham" at the end, including much more of Bane fighting officers, Batman fighting League members and the two fighting each other.
- Batman is unaware of Talia being the room with Bane, which is why she is able to stab him.
-Talia reveals herself to which Batman responds "I Know". He goes on to explain that he never took on the energy project because he knew who she was and believed her true motives were not ethical. Lucious ruined his plan. This makes Nolan's Batman seem much more like the Worlds Greatest Detective instead of getting fooled by the same trick twice.
-Blake's real name is either "Dick Grayson" or never given another name at all. The scene with Fox and the technicians is cut out entirely. We see Alfred smile and nod at the cafe, but not the shot of Bruce. It would be a much more artistic scene to me personally, further making Alfred's comment to Bruce about how he wouldn't say anything he would just nod and know he was alright much more important and it wouldn't give it away so early with the Fox scene. Also the shot of Alfred nodding would be the last shot of the film, not Blake.