I can't truthfully say i enjoyed the first, now don't get me wrong it was a visually stunning film, but like many have pointed out it is just alien pocahontas.
And with everyone saying that a sequel will just be another invasion of Pandora, maybe they will leave the whole original story line behind? leave the whole Pandora and big blue Alien thing behind and move on to other conflicts that are happening in the Avatar universe?
I for one would like to see the next film based on how the Human culture as it seems to have gone down the shitter, the universe seems rich with potential and could do well as a sci-fi saga. It could quite easily expand to depict other scenarios where the whole control of another being is used for more fundimental tasks rather then 'talk to the natives'. But hey, we can all dream can't we