Also don't forget about government types (this can be important to some folks):
Federation- supports democracy, heavily corrupt, extreme disparity; very much like America (I love my country but the gov't IS corrupt)
Empire- Dictatorship, low corruption on the surface (probably because gov't officials can get away with anything and are expected to do so), disparity not as wide as in Federation, legal indentured servitude; very much like Imperial Rome
Alliance- supports democracy, low corruption, more of a loose confederation than alliance (military ties are the strongest among its member states), disparity not a wide as in Federation; I suppose you could say its very much like the E.U. with less corruption, disparity, with the strongest bond being self defense.
I picked the Federation because that's where Sol is located. In most space games, I'm a hardcore Terran. I just hope that at some point I get to participate in a revolution to take out the corruption, disparity, and idiocy of the gov't officials.
And death to the emperor
