Maybe it could also go for blinking animations too, but I'd love for there in the VRChat Creator Companion to be a way to turn off the transition animation between visemes, and or a way to adjust the speed of the viseme's transition for an avatar.

This suggestion is very much a niche thing, ill admit to that, but I think it'd be a much easier way for people to make cartoony-esque avatars rather then having to mess with the avatar animator controller, which can be VERY tedious a lot of the time.