I would need a refresher course on Crows, because it's just been so damn long since I read it. I think some characters that featured in Crows are also touched upon in Dragons, which was confusing because the events are all supposed to be happening concurrently. Arya is definitely in Dragons, those others are not.
Personally, I think George R.R. Martin has created a real mess for himself, and it's only going to get worse. How big is the next book going to be in order to encompass all story threads? Surely we won't be getting another of these split-down-the-middle fiascos.