Would the blockbuster movie Avatar have been as popular if the Na'vi looked as freaky as the concept art below?
It's interesting to see the things that changed. The bio-luminescence of the flaura of Avatar's Pandora was eliminated. The faces look much more alien. and the hair look more like tendrils.
Ney’tiri looks like the kind of girl you could take home to Mom. In the concept art she looks more like the kind of girl you'd wake up with after a night at a bar.
there's some controversy as to whether this is really concept art for the film at all. Marketsaw posted the images. The artist, Jonay Bacallado, contacted them and told them they weren't real after all. Either way, they're pretty good.