Even the world of Avatar people talk so much about didn't seem that thrilling to me. What do you mean when you say world? Do you mean the CG imagery that went into making it look real, or the concept of the world itself and all the creatures in it? If you're talking about the concept, I thought it was kind of bare. Floating rock islands, WHOOOOOOOO. GLOWING THINGS THAT SPIN...OOOOOHHHHH
DRAGONS
OOOHHH
Sorry, I just don't see it as some mind blowing, legendary creation. Then again, its a movie and you don't really have the time to just stuff a movie full of things to make the world interesting. Don't get me wrong, it wasn't bad by any means, I just wasn't wowed by it for some reason.