As a creator of dynamic heads, I find it difficult to create dynamic versions of my 2d face ideas because of how much the neutral expression changes once I upload it to roblox. This issue makes it very difficult to create circle, open shaped mouth expressions as well as some sad mouths, since Roblox puts a slight smile to all resting faces. Examples will be shown below:
Head in Blender ( Pay attention to the circle mouth shape)
Head once uplaoded to roblox (Suddenly smiling?)
While the change is slight, I find it frustrating that the neutral expression already made in blender has to be changed into a whole new neutral expression Roblox creates through combining different mouth key frames.
SUGGESTION: Disable mouth movements for neutral expressions
For neutral face movements, I think having ONLY the eyes blink would keep the animated feel while also keeping the mouth shape the same to how creators intended them to look. To me, there is no reason the neutral expression displayed should have this slight smile. If players wanted these certain expressions, there is always face tracking and other expression faces on the catalog. This only limits creators and the types of faces people can purchase on the catalog, especially since this neutral face differs to how the thumbnail of our faces look.