Update 17.2, (I don’t know the release date yet), finally has an update for the use of emotes.
There are other nice updates, but for me this is the one I like the most in 17.2.
The emotes will be added to Collections (Shift+C), and has all emotes listed. You can see which ones you have, a preview of the emote and how to get it.
(Screenshot by Jillymala, as posted on the lotro forum)