I feel like as time marches on and more and more resorts enter the "restricted" territory SAP will be a mute point and people will just go back to the mantra of "Buy Where you want to stay"
I see people either
1. Not adding on more points
2. Adding on Direct anywhere
3. Adding on Resale but only to add to their current home resort(s) since they won't be able to go anywhere else with them.
Unless it is an extremely popular like BCV 2.0 or BWV 2.0 I don't think too many people will be buying standalone restricted resale