I like this idea. They could even bring in the voice of their real estate agent who pitches a few such ideas (like a room being good for trophies or a corner of the property in desperate need of vegetation) during the housing previews to narrate the tutorials.
I'm assuming you mean in-game tutorials, not in the forums which would probably work better in a different board anyways.
I kind of quit taking Castle Tours because most of the Castles I visited were either sparsely furnished or so crammed with random stuff that it gave me a headache. Waste of time. And quite frankly I feel the same about some of the Top Rated Castles I've visited. It makes me wonder who is doing the rating. Don't get me wrong, people can decorate their homes as they see fit. I'm just not going to waste time visiting them. I try to keep my castles relatively organized and themed. My Celestian Observatory is almost 100 percent Celestian. I have a few pets there but not an overwhelming amount, I kind of spread my pets throughout my 6 castles (7 counting dorm room lol). But hey, as long as people are having fun with their living spaces I'm good with it.