I have played all three of the MOO series, GalCiv2, LostEmpire:Immortals, SE 5, SoaSE, and SotS. I've loved all and hated all, each for their own reasons. That being said, I have yet to discover the "perfect" 4x game. If MOO4 would focus on the essence of 4x-ing, I feel such a game may be...