Now, let's put this in points terms. Mountainside week 52 is worth 60,000 points. Fall Williamsburg is worth 25,000 points. Spring Orlando is worth 25,000 points and summer Mountainside is worth 25,000 points. Does this seem a little more desirable for exchanging that week 52? I bet even you would have to admit that yes it's a little more fair. The week 52 Mountainsid owner would now be getting fair value for their week rather than face trading down, just because the wanted to go from a very high demand week to a location in shoulder season..
Under the current system, the week 52 ms owner could rent that week out for big bucks and use the proceeds to rent the other weeks you mention directly from owners. Without giving up the assurance of being able to get week 52 at ms in most years, if/when they do want it.