5) I don't trust the cruise control at all. It will frequently disengage for no good reason (e.g. a car parked on the side of the road). If you don't have your foot on the accelerator (which you typically won't when in CC), the cark decelerates HARD suddenly with little time to respond.
Obvious fix: Option to disable "adaptive" part of cruise control, so it doesn't automatically disengage.
6) The app is kinda quirky. For example, if you open the "Charging" screen, the start/stop charging buttons jump up the screen slightly after it's done loading the list of superchargers. This frequently causes me to tap "Stop Charging" instead of "Start Charging".
Obvious fix: Offer Siri Shortcuts to all the car control functions in the app. That would be a killer use of shortcuts.