I guess i'm not looking for anything revolutionary but better low light would be incredible and it'd be nice if the camera had the speed of a DSLR: very fast start time, and the ability to shoot a 3FPS (low end DSLR). I'm also speaking from the speed of the camera of the iPhone 4, I can't speak for the 4s. The camera in the 4 seems to take a while to start up now and the time between shots is enough to lose the moment.