Yeah, I'm open for pretty much any empire. I don't care if they existed for 6 months, as long as they had some kind of uniqueness or impact on history. Texas, Venice, East Timor, and Greenland are all fine for me; but not the confederate states.
The confederacy has nothing that defines it as anything more than an inbred rich kid's tantrum. They didn't conquer anything, they didn't have any new ideas, and they were all around losers. They didn't even rebel in order to advance some kind of new idea. They became an "independent nation" just to maintain a lazy status quo that the rest of the literate world had already long abandoned; and the only mark they left on history are 30 second amputation techniques and rednecks running red lights with a "Rebel Yell" decal on their trucks.
They should be a civ in the scenario, but they might as well put my apartment building as a independent civ before they put the confederacy into the main game.