Using emotes while in combat should be a thing in eso. It is a thing in world of warcraft and in guild wars 2. Getting in combat should not interupt current emote animations to a stop. Even when in a group.
Imagine dance fighting the dungeon boss or using trumpet solo to annoy enemies. Using any emote /. Honestly this game needs more silliness and fun stuff.
World of warcraft has a selfie camera option along with free camera (in the in-game settings and or special keybinds) that any emotes can be used too. Guild wars 2 has something like that. Character looks like she or he is taking a selfi (while dancing or any other emote animation) when in the background there is a scary dungeon boss or groups of monsters chasing the tank or other players. That will be a very funny screenshot.
Two suggestions in one forum post.