i don't want to keep on perpetuating this debate but....
The amount of negativity in all the threads on this board is getting really tiring. Why don't we try to be optimistic?
The often cited best ride ever to come out of Disney was Indiana Jones, and that's not a Disney property. (TOT, Journey to the Center of the Earth, and Star Tours especially when it debuted are three of the other best and aren't based on Disney properties either. And I wouldn't say that any of the properties they're based on have characters or plots that particularly resonate with or are appropriate for kids. Nazis and People that practice human sacrifice...really?)
Additionally if you want to talk about rides based on properties most people don't know about or haven't seen try the Jungle Cruise, Splash Mountain, Mr. Toad (at least for many people that rode/ride it), 20k, and arguably the Matterhorn (although that might be a stretch).
I'm not a Star Wars fan but I love Star Tours (both old and new). Liking the property isn't necessary to liking the theme park attraction either.
I'm not saying the expansion won't suck, but Avatar/Pandora is thematically compatible with AK, the movie is visually spectacular, and some of the best work to come out of WDI has come from outside properties. I love originality as much as anyone else but its not a requirement and doesn't guarantee anything better. Let's keep in mind Everest which is original but has broken effects all the time (excluding the Yeti), effects from day 1 that were extremely cheesy (remember the bird?),a less then stellar coaster, and light leaks inside the mountain that to this day that expose the entire superstructure for nearly the entire backwards section. Originality does not equal amazingness. Creativity, Maintenance, and Money equal amazingness.
If everyone keeps bashing the project online, it'll be no wonder if it gets scrapped or delayed. And then the community will complain about that.
I agree with those that say, Let's wait and see.
And for pete's sake please stop being so negative about literally everything that Disney does...or at least wait till its open.