Strawberry Singh recently revealed a test Bento Head made by Akeruka. Now the site Honey Junkie has an article showing a Catwa made Bento Head. See: Catwa Bento!
These heads are using the viewer’s shape panel to adjust the head’s shape. Daeberethwen Arbenlow has the thought that we will likely need multiple heads. I pretty much agree in the sense that we can’t deviate too much from the base look without getting distortions.
As you watch these reviews you’ll notice that some shape sliders don’t work. That is probably a metter of how the designers has weighted the head. I’ll point out the under bite slider not doing much is an on going source of problems. If you watch the Project Bento user group meetings you know teeth and lower lip overlaps have been an animation problem.