I got this idea while waiting in line for Tower of Terror a couple weeks ago. Disney should build an actual hotel that has a theme to it, in this case, it would be haunted. You'd be sitting in your room and doors would open and shut randomly, ghosts would walk down the halls, chains would rattle, headless cleaning ladies, showers randomly spit out red water, etc. etc.
It might frighten the little ones, but I think it'd be a hoot. Screw Disney, I'll build it myself and use it to make my millions.