I generally thing we need less time spent blowing things up in a movie. (Although on the other hand, the blowing-things-up sequences did give me a nice calm-down period where I could think things through and knew nothing important would happen onscreen, so I don't know, maybe if there were less boring explosive bits the pacing would feel too hectic.)

As long as you leave in all the antigravity rollerblades scenes. I would watch a whole movie that was just antigravity rollerblades.