DW, DS, and I would love to own enough points for a Sunday-Thursday stay at GCV once every 3 years (same idea as OP). Our favorite vacation destination is Southern California. We are currently feeding 5yo DS the idea that his best options for college will be in CA, just so we have an excuse to visit, and maybe retire there.
The one holdback is the cost - I too need to see the cost of the points and the points chart before adding on. We definitely will want to stay there, though, so as other posters have said, to own may be the only way to stay with such a small number of units being made available.