You comment here says that demand drives the price, not Disney, and actually from my point of view goes against your theory. If there is no demand then there is no ROFR. Disney isn't intentionally propping up resale via ROFR. They are only using it to get the lowest cost points to resale direct. Because of the nature of supply and demand the fact that direct sales from Disney are contracts purchased on the resale market, direct demand and resale demand on the "sold out" resorts are one and the same. With that being the case it drives up prices on resale contracts because the market dictates it not because Disney wants
DVC to have high resale value. Look at the restrictions they have put on Riviera, seems to me they are trying to depress resale prices (perhaps so they can increase their margin when they do exercise ROFR)
Disney has a minimum they want to make on a direct sale. It is not cheap to pay a sales force, marketing, member perks.... they need a high margin to sell direct. If there are no contracts "cheap" enough to hit the margin they do not exercise ROFR, but create a wait list so if a "cheap" contract comes through they can grab it and sell it. So again it is demand driving the price not Disney, if there were no direct buyer there would be no ROFR. They only buy back what they need at a price that meets their parameters.
If Disney cared at all about keeping resale high it would be forcing Aulani up to make the direct sale look more attractive, but they do not bother with ROFR because it is cheaper to sell developer points (way less expensive than ROFR resale at $80-$100) and they don't care if the resale price is low.