Don't see how that would be much different from the current system. More SSR, OKW, AKV owners would put their points into the pool than would owners of BCV, BWV, VGF, etc. It would just move the booking competition at 7 month to 10 months. As an owner at BWV, I'd just keep booking at 11 months like I do now and forego occasionally staying elsewhere.
Yes. But instead of those points flooding the market at the 7 month window, the excess of the larger resorts would essentially become CRO points at 7 months.
If managed right, DVC could use such a program to take pressure off the 7 month window. They could pocket points from the larger resorts at 7 months and use them CRO.
If managed right, DVC could use such a program to take pressure off of Fall Frenzy. Or in any number of ways. For example, they could use those points to create a "free dining" type program that ties up tons of those points/rooms during DVC off season. In fact, if DVC were using those points as CRO during DVC "off season", they might not have to discount them at all. DVC "off season" tends to be WDW prime season.
Ultimately, the bid/ask spread will create avail at 10 months. If it cost you the equivalent of $18/point to acquire points you must tender at $14/point, there's going to be a surplus of points in the exchange. The 100 point Poly reservation requires a 129 point BWV deposit. Even if the prime trades are between prime resorts, the people trading are deposited excess points that can be eventually soaked up by the larger resorts.
Even if DVC rented those AKV/OKW/SSR rooms CRO at a 50% discount after the 7 month window starts, that'd be income for them because of how cheaply they acquired the points vs their standard CRO. Plus, if they succeeded in destroying the rental market, they wouldn't have competition at these resorts.
Even if the misbalance were high between the large resorts and the small ones, DVC could tweak that, too. The brokers already do sonething similar: SSR, AKV, and OKW are worth less exchanging value; it takes more of those points to trade into a smaller resort than a lateral trade between smaller resorts. That's actually the beauty of such a program. It'd allow points to be highly managed ahead of the 7 month window and could be used to significantly ease up the current pressure there.