I don't know what pricing will do long term on VDH, which is why I made sure my contracts aren't too big there, in case in some distant future I do need to offload them (hopefully never). Disneyland is interesting because there are so few on site hotels and so many good neighbor hotels outside the bubble, some of which are not expensive. But those hotel alternatives are not in the bubble, and the last time I went to Anaheim and was outside the bubble (for a convention), I ran into a lot of less than savory stuff. So the bubble has some value. And Disneyland Hotel and Pixar Pier are crazy expensive to stay at.
Additionally, there are many cute/somewhat inexpensive motels nearby, such as Candy Cane Inn. These places are great, but I honestly wonder how long until some of this gets resold and old motels get torn down and other things replace them, or new expensive hotels with ToT replace them. And then VDH starts looking even better. Will this happen? I don't know. But last time I was there, some of the lodging outside the parks was very long in the tooth.
Long term, who knows what the resale value will be (because the restrictions DO suck), but I think the usage value for owners will be there.