i loved sins when it came out, but then..if it takes forever to finish one game with 10 AIs setting them to normal difficulty level on a huge map. I am not the one to play games with few AI opponent on a small map. but that is not so bad, after a few hours on such setting, the action of the game seems to be AI invading, defend, repel attack, rinse and repeat. Soo i went back to Galciv 2. Of course, when X3 Terran Conflict came out, i only play X3 and Galciv 2, and replaying oblivion.
I might consider going back to Sins, if they ever fix that diplomacy system. one accidental shot against your allies will just make them your sworn enemeies again.