Since we're dreaming...
My home would be one giant tank, like those huge aquariums you walk through like a tunnel, and the fish are swimming all around you. It would be filled with every kind of tang, angelfish, triggerfish and wrasse. It would have sting rays, a few sea turtles and a family of manatees. Access from the roof would allow me to jump in and go swimming with them. Compatibility wouldn't be an issue because in my tank everyone gets along magically and requires the same water conditions, which would be closely monitered by a large staff.
That's not too much to ask, right?