Well. I can't remember if they did this with Dun Scaith, but if they remove the restriction before the expansion drops, what's the issue? The one drop a week is to keep you going back into the content. It's artificial longevity but it at least kind of works.

I've got every job to 70, but I don't really bother getting stuff for jobs I don't play often. I run it once or twice a week. If I get a drop, cool. If not, meh.