And as everything gets unbundled, one might soon be able to buy an accelerated boarding/disembarcation pathway.
Accelerated Boarding. Sit in your seat in the cabin whilst the rest bounce themselves and their cabin baggage into you instead of a comfortable seat in departures until nearly all the rest have gone.
Accelerated Disembarkation.
Stand around in Baggage Claim until your stuff arrives on the carousel as against sitting in the cabin until the rush has gone and then still waiting for you baggage on the carousel.