Swans? Don't really care about them, and normally I like set collecting. Moats? I mostly play the game 2-players with a 3-player setup, and moats don't work with that. Also, I prefer seeing how castles sprawl. I have Factory Fun for confined puzzle fun when I want it. Secret Door? Haven't used them yet. So what do I like? The extra rooms. I shuffle them in and disregard the swans, for variety. And variety is good.
I found these cards to be much more a mixed bag for me than the other sets. I like the gimmick of needing to buy a potion more than I thought I would, but only a few of the action cards catch my eye. But the jury is still out, so rating could swing wild.