Overall, the story is off balance. Some scenes have a very slow pace, while other scenes, often key elements that explain how Robin Hood came into existence, are reduced to a few shots and proclamations. The end of the film tells it all: it reminds us that we were supposed to see the story of how the legend of Robin Hood started. The makers just forgot to tell it.
My only complaint is that there is too much Aliens-like violence and too little time for just experiencing the strangeness of an alien world. My son is 11 years old. Just a little bit too young to see the film. I would have loved to give him this experience.
OK, the story is not the most original I've seen. But there is so much detail and the story is so effective and moving that I don't care. I laughed, I cried, I was angry. I felt every emotion I was supposed to feel. Including the joy of feeling your feet again... I can't imagine a story that would make this film better than it is now.
One thing that should be mentioned here is the influence of WETA, the makers of "Lord of the Rings". They added that special "unamerican" feel that made the LOTR trilogy so successful, and will do the same for the Avatar franchise.
Surely, now that the world of Avatar is established, we can expect more... much more! What a time to be alive! WOW!