Excuse my cynicism, but some of this smacks of marketing folks making excuses to spend more money.
Pop Century may not be the most classicly Disney branded resort (please forgive the pun), but since when does branding impact the capacity of the resort? I mean, Disney is constantly trying to upsell, so once they have a family committed to staying on property, they'll try to move them up a notch. The real reason that All-Stars is full is large groups know it's the most affordable way to stay on property. Pop doesn't allow groups. And, exactly HOW is All-Stars a Disney brand?
I do like the idea of completing the Legendary years with the Animation brand with family suites. If they want to re-brand the whole resort, so be it. But the reason that they can't quite get Pop filled to capacity is that extra spending money has been at a premium for about 9 years now.
"It's the economy stupid!"
Every now and then, Disney marketers annoy me. Can ya tell???
I would prefer that they try to come up with affordable short vacations. I don't want 3 free nights after staying 4. I'd prefer a midweek discount: arrive on Wednesday, checkout on Friday for $250 pp in a Value Resort including parks. THAT'S something that would impress me.