Just a post saying what I have done since last update.
So as far as facial animations go, I've added asymmetries of mouth movement in a few places and more depth in the creases of the skin where I think there is certain emphasis in the words. Its obvious in the submitted video, but I've also added the sinister smile and laugh at the end.
I also very much worked on the lighting, finding good camera shots, vfx etc.
This character was fun to work with as I can play around with the teeth more. Usually you want them looking nice, however it wasn't the case for this. I still wanted them to look somewhat aesthetically pleasing though, so they're not too hard to look at, but the last few days I did some final touch ups like color grading the teeth to make them look more yellow.