Just thought of some fun little ones to add a little humor to the game, make it slightly less serious at points and I'm pretty sure they won't be too hard to make.
1) Bowing, this could be used as etiquette to signify a duel (Like up blocking in MM/NW)
2) Charge motion, kind of like having your back arm swing forwards to signify a charge
3) An animation for opening doors, so they don't look like they open magically
4) Taking hat off and scratching the head, that could be tied to an button to show you are going afk or something
Just some fun little ones that may or may not be worth using