Disney always has the upper hand.I also think it depends on the economy.
Disney lowered point minimums during the Great Recession right?
Years ago, DVC offered some short term deals on APs. For a while, our APs gave us a 20% off discount instead of the current 10%. Lets face it, it is what Disney does. They lower the cost of hotel rooms when they are not booking enough. They offer "Free Dining" when they are not booking enough.
And with the reservation system, they know exactly how many people will be in the parks.
If Direct DVC Sales slow down, they will offer more incentives. Perhaps some extra discounts, perhaps "Bonus Points" (which we all know is just lowering the price, without lowering the price).
Again, Disney always has the upper hand.