SEV AI is better with Captain Kwok' balance mod - its a must in my opinion (though it has been a while since i played it) A new version was released this month 1.19
Download
http://www.captainkwok.net/balancemod.php
Thread
http://forum.shrapnelgames.com/showthread.php?t=30863
Another great MP game, if anyone remembers, is Emperor of the Fading Suns -crap AI but a fantastic multiplayer experience.