So attached is a very crude drawing of what I was trying to describe as a possibility. I realize that one particular issue with something like this, because it's a pass-through station, would be determining which cars to pass off into the side loop in a design like this. I assume that the way they're currently doing it in Riviera is slowing down and opening the doors, then people either get out or they don't, and if they stay in the car, the doors eventually close and they move along to Epcot/CBR hub. With my not-to-scale, preschool-level, non-engineering background drawing, I realize that they'd need to know not only if a car is coming with an
ECV, but also if that ECV passenger is getting off at Riviera.
Edited to add: Those black lines in the middle that look like Roman numerals (if you didn't know how to value them) are supposed to be stairs - you'd have to have people come up into the middle of the station at the platform to between the loop and the main boarding area.