There's not much to write about this as it is kind of a rate it yourself game. For each and everyone of us we all like different sets and layouts of games. Personally I like weird and wonderful adventurous games were the player chooses where they want to go at any time (which James Cameron's avatar lets you do.
As most of you have probably already looked at photos to see what your getting before you buy it. The texture and effort that they've put into the game to look as much as the movie as they could is just amazing. Plus there will be creatures and machines to control (grounded or fly). Also the choice to play as humans or the Na'vi is a good thought for those players who always like to play the game a second time and change the story a bit.
I hope you all will take this game into consideration I no I have.