I had heard a lot of details about Destination Disney last year and was excited by what it could offer. It has actually started with the introduction of Pal Mickey V1.0. Version 2.0 will be the actual Destination Disney one.
As far as the airport system...
You would get to the Disney check in area, and a cast member would check you in to your resort, give you your passes, take your bags (and get them to your hotel), and get you on the next shuttle. This bullet train was going to be the way that Disney would get you where you needed to go. Now that it was shot down, I suppose shuttles will have to do. When you get to the central area (TTC i guess) you would have the ability to get anywhere on property you want to go. You are all set to go to the parks or you can go to the resort. When you end up at your resort later, your bags will be waiting for you.
It would be a great system and I am sure that it will one day be implemented (in some form). People will pay for the convenience.