I think the IP's, and only the super strong ones you mentioned, would be OK for a boutique hotel, but not a large property. Once you heavily IP a hotel, you're limiting the demographic that will book it, so I'd be uneasy with anything over a couple hundred rooms. I think the best of both worlds in large hotels is like the way Universal does it, and strongly theme a few dozen rooms to a specific IP.....I recall a top insider who had access to the Blue Sky planning sources, hearing of a possible small boutique Potter hotel just outside Diagon/HE, but evidently that concept didn't go anywhere.