A really interesting post to read, thank you!
One thing you might want to look into coding, if you haven't already, is the "Easy Entry" function for the electric seats. If you're not aware, it means the seat will slide back away from the steering wheel when you stop the engine and then open the driver's door. The seat then returns to the memorised position when you enter the car, sit down and close the driver's door. This is really useful for my wife, who is quite a few inches shorter than me, and sits fairly close the steering wheel. Makes getting in and out a bit easier, and I thought it may be useful to you too after reading your post