I'd motorize the charge port door so it can auto-close. I suspect this seems dumb, but as a 10 year Tesla driver the hardest thing to get used to is having to manually close the charge port door. It seems like I have to stop the car, get out and push the charge port door closed about half of the time I leave the house. I'd gladly trade the second row seat motors for this: I open and close the charge port at least once a day, but I don't drop the second row seats very often.
Note that this is admittedly nit-picking, but it is the thing I would change. The things that really matter (range, ride, charging) are vastly better in Gravity than in any of my Teslas.
I would love to be able to buy a cover for the gap between the second and third row of seats. That would give us some small amount of concealed storage space (when the third row seats are stowed) and will be necessary for car camping. I'll probably cut a piece plywood to fit and wrap it in carpet for camping use.