Sounds like a good idea, would love to see what may show up and what people may have in mind for as a character.

I can fully understand where you would like to have the dab pose however that would more than likely be way out of place for Rack 2 or would be needed unless something calls for it and even then the possibility of it being present may not be for some time (if applicable)

Would not need to map them as they can be an action when interacting with subjects to reduce button mapping and can be used throughout the game as needed.

Would also like to choose facial expressions as well 

(modifiable when doing interactions with subjects)

Of course after a cost of some of the in-game currency like would be used for buying toys or equipment