Maybe it's best to wait until the new movie comes out to see if it's another Burbank flop?
Disney hasn't had a great track record of late for movies. And the original Avatar movie a decade ago was a big deal more for the the 3D tech than the actual story or characters. Especially the characters, who don't resonate or exist at all in pop culture today.
They built Pandora in a very weak theme park that only has 8 rides after Pandora opened. 8 rides. It basically can't fail there. Even if you count the parking lot tram as the 9th ride of the day.
Wait until this Christmas when the new movie comes out. If it's another Billion dollar hit and the kids go crazy for blue aliens, then we can talk about theme park expansion.
Until then, it's probably more likely we'd see an Apple Dumpling Gang overlay at Big Thunder Mountain before we see an Avatar expansion in Anaheim or anywhere else beyond Orlando. 8 rides.