We can't do anything underground because of Florida's low water table.
An air gondola would be nice but it's too slow and for somewhere as flat as WDW, it wouldn't really make sense.
A mag lev train system would be nice, we could even use it to replace the monorails and just retro fit the exisitng beams. It would also be quite picturesque.
We could use a combo of that with maybe smaller people movers or an electric railway for the downtown disney area.
we could connect it all on a massive transportation hub that features a giant parking structure so that in essence, anyone can just park their car there and never need for the entirety of the their stay. It could keep guests in the resort exclusively.
I was thinking that it could take the place of the ticket and transportation center and turn it into a giant transportation hub for the maglev, the boats and even the buses (which at this point won't be as prevalent)
they could look like these:
http://www.infrastructurist.com/wp-content/uploads/maglev-china.jpg
but design it to look like the TDR monorail :
http://www.tdrfan.com/around_the_resort/disney_resort_line_monorail/monorail.jpg
it would be environmentally friendly because it would reduce the bus fleet AND the number of guest vehicles on the roads.
the plan could be like this: a main transportation hub, let's say it looks like this:
http://www.laughingplace.com/files/latest/20060207b.jpg
and this is where people convene to buy their tickets, book reservations even shop and dine, basically an airport but not.
now the entire resort will be divided into 4 main districts: The Magic Kingdom/Bay Lake area, The EPCOT area, the Hollywood Studios/Downtown Disney Area and the Animal Kingdom/Western Beltway area. The 4 main districts could then be reached by two options:
a) by Walt Disney World Shuttle - a small fleet of buses that are now hydrogen fueled.
b) The Walt Disney World Mag Lev System.
The Mag Lev system then has their own stations in each district that are connected to each districts' own smaller public transportation system.
The Magic Kingdom Area has the Ferries, which have been expanded to service all surrounding resorts, including the new Dolce Vita Resort and Spa.
another Magic Kingdom area transportation system is the newly expanded Walt Disney World Railroad which connects the actual WDW railroad with the contemporary Resort, Fort Wilderness and the Wilderness Campgrounds with the Magic Kingdom.
The EPCOT area has a a new people mover system that is extended to World Showcase and the surrounding resorts.
The Hollywood Studios/Downtown Disney Area now features a red car trolley system:
http://sfcitizen.com/blog/wp-content/uploads/2009/01/img_0151-copy.jpg that takes guests to and fro (and little known secret, it also takes guests to World Showcase but shhh!) and of course there are the Ferries that go between them and EPCot.
The Animal Kingdom/Western Beltway Area station is more modest and they have a unique feature with a small fleet of Safari trucks that take guests to and from DAK, the Western Beltway Shopping district, the Four Seasons Hotel and Blizzard Beach.