I'm being a broken record here, but I really think Disney has irreperably damaged their brand as a premier entertainment destination.
Perhaps they never had much catchet in that space to begin with, and I've wrongly believed that to be the case for a considerable number of years, but their aggressive courting of down market offerings (Value Resorts, Dining Plan, etc) has led to the perception that Disney World is an exceedingly low brow vacation destination with the patronage to match.
The explosion of DVC plays into that as well, as the popular sentiment regarding timeshares in general is that they are largely financially detrimental arrangements bought into by rubes and the less-worldly.
Now, before anyone freaks out, I'm not saying any of this is true - but what's true is that this perception absolutely exists and likely is keeping away a certain population of folks who would otherwise spend a considerable sum at Disney World.