With the introduction of PVP in the plaza and condos, I would love to see the ability to kill other players with some of the emotes that are available. With emotes like fireball and golf drive especially, it would be a fun means to interact with other players who have PVP enabled. Launching someone away from you with a golf drive could be a entertaining and lighthearted way to mess with others.
This had been suggested for SDNL in the past, but since PVP has been introduced I would love to see it implemented everywhere.