It really doesnt matter how cool the SJ suit is. OK, its giant, but so what? Na'vi Jake Sully was a giant but after about 10 seconds of him being on screen you forgot that and visually treat him as just a regular guy (but colored blue).
The fact of the matter is that, in ALIEN, when Dallas, Kane and Lambert first encountered the SJ:
Underneath he was just a bald man with a nose, two ears, two eyes, a neck etc. Alien? What an insult! Its worse than Darth Vader being the creator of C3PO.
Does the Space Jockey have a Coccyx tailbone?