The tiki room rumor is interesting. When I did the dinner with an Imagineer a while ago a big thing we talked about was closing things, whether that be a restaurant or an attraction or what have you.
The biggest challenge with that is figuring out what can occupy that space.
The tiki room is so small I can't imagine what they could replace it with. The previous posters comment about the club 33 made sense, that could certainly fit.