Every class has their own unique emotes, but (at least in the Samurai faction) there is one emote possibility that has been overlooked. That is the bow. I feel that the faction should have a unique emote that has to be purchased for each character, but is the same across them all.

I feel this concept could mirror across all factions, although I am not sure what kind of greeting/acknowledgement emote the Vikings would have or even the Knights. If anyone has suggestions for the other two factions, feel free to add your suggestion!