After driving the Gravity DE for a few weeks, I can definitely recommend a few (seemingly simple) software improvements:
1) Ability to use the right sided touch pad buttons to cycle through My Favorite channels that I have starred in the list.
2) Ability to have mixed media sources saved as one "My Favorites"...ex: Have a mix of SiriusXM channels AND regular radio stations all one the same list without having to switch audio sources and then pull up a separate favorites list. Also, have the Favorites list be the default list that loads every time when you get in the car.
3) Ability to save Hold/Creep setting. It seems to default to Hold every time I get in the car. I'm in the minority of people that prefer Creep mode and I have to change that setting every time I drive the car. I'm not sure if this happens intentionally as part of the EPA rating stuff (like some ICE cars have a default mode that turns the engines off at stoplights to obtain a certain MPG rating) or if this is an oversite or a glitch.
4) And just for good measure... Android Auto in the Gravity would be great!