Maybe in the expansion we'll see a vastly improved AI. With the rather huge percentage of players (IMHO) that go for SP over MP (even then often as co-op), i expect it would be worth the effort for IC to take on such a task.
Indeed it would be worth the effort. Currently the AI needs some buffing for the really hardcore players(maybe a This-Is-Just-Plain-Ridiculous/You-Will-Lose setting that gives the AI 5x normal resource income? for a quick fix?)
As such the AI is actually fairly challenging for most players already, and they've accomplished this through actually attempting to program the thing well, instead of just throwing zounds of money at it so it never runs out of units. Better running away logic seems to mostly be what it needs. I still kill at least 50% of the AI ships while they are attempting to run, theres too much weight on cap ships in that calculation imo, and there should be something in there that says "we can't make it anyways boys. Go out guns blazing!" so that they do at least some damage to my fleet rather than dying horribly getting shot in the back. It should, however, prove to be a very challenging AI once they get the tweakage done.