There's a lot of stuff that interests me in the game, but not very much of it gets a lot of flesh.

Like the Sky Pirates from Void Ark questline. Or the rest of all the Auspices. Or all of the named Xaela tribes that we never really see.

Ascian/Ancient stuff is a top lister for me as well, but I know we're getting more of that in 6.0 due to Mare Lamentorum.