Out of curiosity, how much space is required? In our itty-bitty 720-sq-ft home, we make use of an old-fashioned card table that is probably about 3-foot square. It holds Dominion fairly well. It barely holds Ghost Stories (if we don't use the five-player expansion). To my surprise, it actually holds Risk:Legacy just barely (assuming I put the box on the floor). I wouldn't dream of trying to play Smallworld, Dungeon Lords, or Power Grid on it.
I wouldn't mind finding another game that will fit in that space. Maybe Kingdom Builder is my next consideration.