Wink disable and remote windows are the most popular changes. You might also want to change the settings on the Bose for cloth seats which I hear people like a lot more. I haven't changed mine yet, though, so I don't know.
As for the camera, did you not buy the Tech Package? The backup sensors in the Tech Package are really good and have never left me wishing for a camera. But if you didn't order the TP, then nevermind this comment
- Jeremy -