There would be a huge opportunity for profit here. By increasing the points required to trade into the BVTC for stays at non-home resorts, ownership value could be reduced wholesale, across the board by increasing breakage on a scale unlike anything we've seen.
The individual hit may be minor, 2-3 points/night on high-demand trade-outs, but the cumulative affect is a huge reduction of what owners are able to book with the points they bought as a percentage of the resort. It would be the 2020 retracted reallocation on steroids.
It could also be sold very easily in the same exact way the restrictions are. A move by Disney to help with availability issues that members have demanded be addressed. Of course it won't be able to do so without taking away additional ownership value, but if the restrictions and retracted reallocations are any indication, there will be a contingency of owners who will applaud this move, those that don't may grumble on these boards, but the ownership as a whole will eventually lay down and take it. Because that's our nature and Disney understands that better than we would like to admit.