I also recently discovered the tactic of making Base Carriers. Instead of giving them guns, I give them a shipyard and a bunch of fighter bays. Then I build them near important planets and at warp points. Fighters in bays don't get coutned against teh 2000 units in orbit, the fighters can move during combat so the enemy can't just run out of the base's range and wait for 30 turns to end, and it can replace lost fighters on its own. Hehe. Too bad they take so dan glong to build...
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