A lot of those features would be very nice to have, especially if you live in a place with a frigid winter. I live in Canada so it is something that I am definitely considering.
I do not care as much about the seats or the navigation system though. I swear by Google Maps, and its free on my phone. I'm not that convinced that moving the seat in more ways makes it more comfortable. After all, you only sit in it in one position ultimately.