Well, I don't know if this is what you are looking for, but I am planning on redoing my basement, and building it around an inwall tank. My dream tank is 10x4x3 reproduction of a flooded Amazonian forest. It would have artificial tree roots springing up through the tank, be heavily planted and be filled with Peacock Bass and possibly freshwater rays, though stocking is flexible. I wouldn't even mind having building a decent size land area above the water level to further elaborate on the forest theme.
I know you usually focus on salt, but I have seen you do some freshwater tanks, and there is a whole community at monsterfishkeepers.com that would love to see you tackle some fresh water tanks.
See this page for some inspiration of what I want:
http://www.aquatic-experts.com/freshwater_aquarium_backgrounds.html