If these aren’t already in the game, they need to be. The only back Item I have EVER found is one I got from a story mission that doesn’t even show on my character.
Add capes and cloaks. Make them gettable through drops, not just story missions. Add them to the faction and cultural armor vendors.
Oh, and, as a side note, add guild/faction tabards as well. I know it’s considered bad form to suggest adding things that are also in WoW, but this is one that I always liked. Each of the 3 orders should have a tabard, all of the playable races should have one, either for their race or their home city, and guilds should be able to make their own.
Maybe it’s purely a cosmetic thing, but I think this would only add to the game. It certainly wouldn’t hurt anything, and I think it would be a popular inclusion.
Just a thought. Enjoy the rest of your day.