Saw this movie in Imax 3D. Marvelous technology! Beautiful images, action, etc. Primary means of knowing (or maybe not.)GCI characters vs. live ones was their very non-human traits and the severe action.
Story was a collection of movie cliches: much content taken from prior movies - the final battle is like the Ewoks vs. the Storm Troopers in The Return of the Jedi; dragon riders are hardly new; and the ritual of the natives after killing an animal is directly out of Last of the Mohicans. The characters are very one dimensional per the script -- greedy, heartless corporate dude and colonel way too hot to kill and destroy.
Lots of technical awards at the Academy Awards, but not for acting or for the script.