1) Do Quori feed on the tailored dreams they impose on Riedrans? They aren’t nightmares, but rather are comforting and pacific, which seems to be exactly opposite what they need to feed.
2) If not, can the Quori survive on only the dreams of non-sapient creatures?
3) If not, doesn’t that mean that the Dreaming Dark actually can’t ever bring the whole of Ebberron into Riedran-esque unities? They would always need some wild dreamers to feed on, yes?