Just saw this last night. My conclusion:
Never before has the bastard child result of a three way between the Matrix, Ferngully, and Return of the Jedi looked so good.
I've seen this movie a dozen times in a dozen different forms. Still not sold on 3D as it knocked the brightness down a few stops and gave the whole thing a yellow hue, not to mention it was overdone (3D photographs anyone?). Gonna go see it again in 2D in a couple weeks. But the story of this movie isn't it's writing or story...it's obviously the effects. I reluctantly admit that the facial animation is the new benchmark in CGI. The rest of it seemed like nothing new, but the real magic was in the close ups (specifically the kissing/mating scene)...which there weren't nearly enough of. Cameron traded story for CGI and made this movie a vehicle to show off the tech...nothing more. He's not going for originality of plot. And the writing was really heavy handed, especially with the parallels to the Iraq War and terrorism. We get it. America likes to invade 3rd world civilizations to let it's corporations profit on it's resources...this is nothing you have to bash us upside the head with using a sledgehammer.
Other than that, this movie is nothing special.
That said:
Whatever happened to using models, puppets, and animitronix? I knew movies were going to hell the second George Lucas decided to CG every single storm trooper. Someone out there thought "hey, why not follow suit and CG everything we can!"
While initially I'd agree with you, the story here is bigger than that. Motion/Facial capture is the future for films LIKE this. You'll never do a film like No Country for Old Men, There Will Be Blood, The Departed, Casablanca, etc using full CGI. HOWEVER, the advantage to this kind of filmmaking allows the director to capture the FULL performance of the actor, then do whatever he or she wants as far as camera position, lighting, set, environment, etc. It gives FULL creative freedom to the storyteller. Which, for films LIKE this...is invaluable. Not saying I enjoy this kind of film any more or less than traditional methods, but it's an important tool that will hopefully lead to better films down the line.