I agree that folks who employ this tactic are technically not breaking any rules and are certainly entitled to use this loophole as long as it exists. My argument is for the elimination of the loophole itself.
I don't argue from the perspective of what is the best system for jarestel, or Sandisw, or any other individual member. My point is that we all acknowledge that
DVC's intent is to give home resort owners an 11-month booking window. It's in the documents and we all (I think) understand this. The fact that a loophole exists that allows a member to pervert the intent of the 11 month window into a virtual 12 month, 13 month, or who knows how many months booking advantage runs contrary to the spirit of the rule.
So if the booking process needs to become more restrictive in order to return to a true 11 month booking window, then so be it, I can live with it. OTOH, if DVC says they no linger care about booking windows and a member can book as far in advance as they want, I'm good with that approach as well.
Edited to add:
The 11 month home resort booking window is guaranteed by the POS when they sell the timeshare, while the process to implement the booking window is simply how DVC chooses to manage the windows. If one can demonstrate that the process violates the terms of the POS by allowing some members a longer than 11 months booking window, and by extension, depriving others of the 11 month booking window, I think DVC could be forced to change the process to become compliant with the POS.