Thought I'd throw my 2 cents in.
A long time ago, when WDW only had a few hotels, they would allow resort guests to make reservations to resturants and to things like the Hoop De Doo up to a year in advance, while non resort guests could only make reservations up to 30 days in advance. (Might have the time frames off a bit) When we went in '92, we stayed at the newly opened Carribean Beach Resort specifically for this perk. It made the difference between staying in a really nice resort offsite versus a standard looking hotel room onsite. Before you jump down my neck, yes, I know that the area is themed and full of Disney magic, but we still have to admit that for the same price as an onsite room, you can get a really nice room offsite that anywhere else but Orlando, we would be excited to be in. Personnaly, I prefer the onsite rooms (even without super perks) once I stayed in one. It took the perk to get me to try it the first time.
My long point is that WDW has done something very simular in the past.
Actually I'd love to see the system set up to allow a full day's reservations on FastPass. Maybe resort guests get first crack (like the old resturant policy) with non resort guests having a more restricted window. In fact, if the windows were months ahead, you could plan our your entire trip ahead of time.
For engineer types like me, I'd love it. The more spontanious types, like my wife, would hate it. As long as the system allowed for walk-ons, I think this would be cool.
I've been told that Universal in California has scheduled appointments and your tour is guided from there, so that you entire time is spent touring. Maybe each "land" could have a set tour you could sign up for. You'd see each thing in each land without a big wait. Maybe even an Audio Animontronic tour guide.... hmmm (dream time).
Thanks