Cool pics Jason. I think they are awesome, very pleased with them. Personally I love the sculpts, I find them to be a realistic impression of what Snake would look like. I know many of you guys like the older renders, but I find them soft looking compared to the new renders and Shinkawa's artwork.
The hair could be longer, but I remedied that by fusing the back portion of the metal boss wig to it, looks great now.
And all this about accuracy of the face, if you want to get really down to it, the renders in MGS2 aren't accurate either because they don't look like Shinkawa's artwork all that much, and since he designed the characters, his version is the "most accurate".