Dance can just be a performance variant. Same with singing, or acting out a play, or reading poetry. Bards can do that.
As for emotes, I don't see the utility outside of group multiplayer, and even in multiplayer, the usefulness is very limited. Maybe if there were some basic gestures to convey meaning to players. Perhaps some NPCs could react to certain gestures. I would like to give the middle finger and for an NPC to either be offended or give it back.
