@lesbentley: I wouldn't mess with the EyeClose. I think it makes a lot of sense to keep separate dials for each eye as for as the lid positions are concerned, since they can act pretty much independently. The left-right movement is  a different matter. In fact, I was thinking about adding a "cross-eyed" dial.

But I'd very much like to have only two sliders for things like Smile, Frown etc. Your proposed setup also makes sense to me and would have the advantage that in order to achieve a strictly one-sided smile, one would have to move only one dial instead of two.

Anyway, I'll try out both versions and see which one seems more natural.

-- I'm not mad at you, just Westphalian.