I just realized that I neglected to post any of my thoughts here, but here is my quick assessment from that "other" board:
This film is an absolutely stunning acheivement in visual artistry. As such, it is a must-see, especially in it's native format, the incredibly smooth IMAX 3D.
However, the thing for me that kept this from being a classic for me was the absolute lack of motivation for any of the characters. Nobody, especially the evil humans, was given any reason to act the way they did or feel the way they feel other than the script dictating it. There was no "hero's journey," it was simply part I and part II. There was not enough exposition except for that asinine throwaway speech by the Giovani Ribisi character near the beginning. The story also surprisingly failed on a lot of dramatics beats, especially involving the deaths or near-deaths of major characters or beings.
The visuals, for me, were enough to overcome the shortcomings of the story. I just wish I had felt a little more "awwwww..." to go along with my "wow..."
I pretty much agree (stop the presses!

) with all the nitpicky things that LAConnection has gripes about, and I am somewhat surprised he was able to overcome them much in the same way I was.
And Zeke, I'm sorry you didn't enjoy it, but I understand why. You won't get any argument from me.