OK I think I'm caught up on the thread LOL. Sorry, worked all day and into the night (as it will be for the next week.)
My idea was somewhat similar to yours in that it involved hotel design. I'm going back and forth with how narrow or broad to do it, and I'm considering giving people a choice (because I can't make up my mind LOL.)
One would be to build a hotel (or redesign an existing one) to incorporate an actual attraction - not an E-ticket, more like an Epcot World Showcase level thing. People like the monorail through the monorail resorts because it's "like" a ride in the resort. So make a ride in the resort. It can be a boat ride, a tame coaster, a dark ride...but something that fits the theme of the hotel (or a new one) and enhances the resort without being disruptive. (It can also just be on the property of the resort.) But it should make that resort book up like Be Our Guest Restaurant books up.
The other would be to build a hotel with a specific purpose, not just a theme. So, to be transparent, I have an idea and I'm working backwards from that to create the challenge, which is what lead to this whole post. I like something that addresses a real need. I have a specific need in mind. So I'm not sure whether to specifically state that need and let each team interpret the solution as they see fit (which I think is very doable) or to just leave it completely open to whatever need you guys think would give a new hotel a purpose beyond a theme, something guests would appreciate, even something that keeps guests staying off-property right now. It could service a niche market, but be attractive enough to fill to capacity.
Of course, there's always the twofer: a new hotel with a purpose AND a ride LOL.
I also have no idea of what's been done before, other than Space's post earlier in this thread.
OK, lemme have it.