Well you're getting Amdapor Township which appears to be a 4man. Now I'm not one to cut devs slack when they don't produce as much content as they should, but one 4man dungeon every couple months is probably all they have time to make, seeing as they have to do other things as well.

Now, what I do feel is going too slow is additional jobs. A new job, far as I can tell, is just a handful of new abilities for an existing class, a new set of Artifact gear, a recolor of that same gear, and 5 new quests that aren't even voiced. I accept that I might underestimating it, but I feel like a new job ever couple patches should not be hard to do.