It's because the face is a little too stylized with all those lines. See Starscream, he suffers from it too.
I call it puppetface. I think the interior part makes him look like one of the Rocklords, but that's me.
Day 1 purchase. Can't wait to see Bumble Bee and Soundwave and hope that we at least get to Grimlock and Shockwave. Could you imagine them doing a Devastator or Bruticus?!