This is a suggestion that I think it's very relevant to the success of the game (?)
But yeah, here's a very simple mockup.
I have no idea what the plans are for that menu, but I think this will be a welcome addition since Emotes sadly are really overlooked and isn't cool that riggers and animators spend too much time making those, they go largely unnoticed.
Cheers (feel free to move to the right section).