I would go a step further and say that we lack emotes as a whole. This is an obvious missing feature in a role-playing game.
In a mmorpg in which you have social interractions with a lot of human players it would be... in a solo game / multiplayer up to 4 players game you're talking with on discord / coop game players are sat right next to each other : it's not.
OP : your sister can learn to play music with a feat at level 4.
You can create a band, which is already a useless feature that players won't enjoy for more than 1 minute on average.
Create a feature allowing characters to dance would be the same : a waste of time.
