A very interesting design.
Creating a "dog bone" track configuration won't save you track; that is unless you want to have a single rail that only one Monorail can use at a time. Instead I would suggest using paired rails sharing a single heavy duty pylon. You still save money by having fewer pylons (even though they will be heavier duty), but you can have 2 way traffic simultaneously.
Monorails are good for large, predictable passenger volume over moderate to long distances, but for short hops they are not efficient or convenient. Imagine a railroad train that stopped in every town along the way. This is why they have light rail. There are a lot of possibilities for cool light rail transportation. For example, the boats on the Sasagoola (sp?) river are, light duty transportation! The volume of passenger traffic from the resorts on your green line probably would be better served by light rail.
In planning a public transportation system you have to pay attention to where the greatest number of people are going to/from. The EPCOT line was intended to offset parking demand between EPCOT, the lagoon resorts, and the magic kingdom. While Animal kingdom, MGM, and even Downtown Disney have huge parking lots at their respective locations so they don't need it as much (if at all).
All that being said, the monorail is a big favorite of mine and I never miss taking a ride. Unfortunately at a million dollars a mile (or whatever the true cost is), the people at Disney have to be practical.
Kaptain Nemo
