Working on the face. Have switched the style slightly, as I've added the goal of having this be able to work with the new facerig coming in 1.1 (although that maybe not be in the initial setup.)
This mostly matters for the mouth and eye design. Specifically, I'm going to try to have this work with spherical eyes, not flat. This is important for rigging, and also for getting decent results in Cycles (flat eyes + light bounces don't mix.)