The best review of the land that I've read thus far is by
@lentesta here:
http://blog.touringplans.com/2017/05/15/review-pandora-world-avatar/
I've only seen the ride-through videos, but I agree with the sentiment of not having any attachment to the characters and the attractions suffering for it. As someone who's planning his next trip, I'm eager to see the land and the technology even though I'm apathetic about the rides and story, which is kind of a reversal from how I used to feel about Disney compared with Universal Studios. (Example: I thought "Twister" had an awesome effect but didn't care about the movie.)
Perhaps- and hopefully- some synergy between the land and upcoming movies will create more emotional attachment to the characters and world.