Having an entire expansion dedicated to the 13th after devoting most of the 6.x MSQ to it would feel a bit...excessive, IMO. If anything we should go back there later after the situation has more time to develop, assuming there's even any loose threads left by then.

If they're trying to take us in an "unpredictable" direction for 7.x, Ilsabard arguably would be moreso then Meracydia simply because it wasn't mentioned as one of those places we should visit. I would much rather see/address what in the world is going on over there in the wake of the empire's fall and everything that followed then anything else on the Source, personally.