Approved for voting. I did change your suggestion slightly towards 'any custom emote' and note just the two you mentioned, as otherwise people will just want a suggestion topic for adding one single emote and that's not the idea of this forum.
Voted for No. Don't see any added value in the game. I think game devs could spend their time in a better way, knowing how many more important things could be improved in the game compared to this one.