For the blink feature in 3.0, allow the user to specify how much of the viseme is triggered at open eye and closed eyes. I feel this is good as it would allow the user to have eyes a little more closed than normal and fine tune it so the blink is more natrual and doesn't have mesh overlapping issues.

Example: I try to have my eyes closed for 20% but the blink feature will always set it back to 0 and ignore the default blendshapes on the mesh renderer and if i use another blend shape for the 20%, the blink will just add to that and clip the eyelid into the cheeks.