I think the issue is that they had a plan that seemed to work quite well, in terms of customer satisfaction (FP+). They just didn’t want to make it obvious that they were charging for a formerly free system, so they tried to fix what wasn’t broken. I think whatever system they go with in the future is going to have to look a lot like the old FP+, in the end. Most people, imho, want to be able to lock in their plans, especially if they are paying Disney prices. Ain’t nobody shelling out 4 or 5 figures to go to Disney in the hopes that they will have a “spontaneous” day of riding the People Mover and going to the Monster’s Inc. show, ha ha. If they want to connect as many people to as many rides as possible, they are going to have to allow advance reservations again (or limit park attendance, or build many new rides - but in the absence of that, a reservation system is the only feasible system.) A day-of dice roll system doesn’t allow people to organize their day around other park goers efficiently, because no one knows what to expect so no one knows what rides to rope drop / budget a wait for / skip, etc.