I'll be putting my factory mirror control switch in there.
I'll always be coming up with other ideas as to where to put the button.
One idea I had - move the hazard light button to where the cruise control button is (I removed cruise control) and put the push start where the hazard button originally was. Kinda far from the key though. Ideally, I'd like to keep the button as close as possible to the key but having it in a nice spot where it looks real nice.