It's pretty simple, never cared for Avatar and Pandora in DAK falls firmly under "It's nice, but not that nice.". It's not like Cars Land which honestly impressed the heck out of me even though I don't care for that series.
For me, the best part of Pandora has nothing to do with the films themselves, as it's Satuli Canteen. But here's the kicker, Disney is not calling this a "Land". But a "Destination", so there's a chance all that DCA is getting is a ride with no Satuli.