I have a possible theory. It does place a nefarious motive on Disney's part, so if you don't like things like that, read no further!!!!
All the points used for cruises and everything from all the resorts would get the highest return if they were used at BWV, right? So, Disney reserves all the rooms they can with the BWV points they get at the eleven month window. Then the mornings that the seven month window opens, all the VB, HH and OKW points that were used for other things are ALL used to reserve BWV rooms. Disney knows what they will be able to rent for cash, and reserves thos rooms at those times. They basically lock up the seven month window and also use the eleven month windo to its greatest advantage.....remember, they answer the phones, so they can take inventory before it ever actually is available for reservation...
I only hope that they respect the 7-11 month windows, they should, but if they are makeing the reservations the morning, before the first phone rings, the morning that the seven month window opens up, are they really respecting the booking windows????
"From each according to his ability, to each according to his needs", Karl Marx, pretty sick, huh?