1. The easy fix would simply entail fixing intensive and advanced farming.
2. The hard one is optimizing *tactical* AI *and/or* changing starbase foritifications. The AI is doing a much better job, but it still fails at taking out starbases. When the AI can still only build a few dinky fighters, anyone (including the AI, but it often doesnt) can research two or three cheap techs and arm any starbase with 13/6/6 attack and 5/5/5 defense (without any bonuses). That costs only 9 constructors and can take out ANY fleet the AI can send against it.
The sad part is, the AI WILL send out lots of fleets against starbases, and loses each and every one on suicide runs resulting in 0 hp loss on the part of the starbase and total destruction on the part of the AI fleet.
Oh, the injustice!!!