FC,
Great idea, but how much "education" would be needed?
I'll always gladly go further back, as long as I can get my window seat, I don't care when I get off. 5 minutes really doesn't make that much difference, and you can usually play catch up by the time you get to baggage reclaim (or the car rental desk or airport station for that matter!).
Ditto for not renting cars with the airline's preferred partner for similar reasons - but who listened, they've sold us a cheap flight, so they must be the cheapest for all the add ons.
Pax get lectured enough though with all the other announcements, so none of this will happen. So I think Jet Blue's 34" pitch for the rear seats is a much more interesting idea, but I can't see that having much appeal either on the GLA to BFS run!