[PvK]

I think the "attackers turning around and leaving" phenomenon tends to be the AI Supply Minister, which sends all ships back for supply as soon as they get to about 60% supply, regardless of distance to a resupply depot. A tweak to AI empires' supply abilities would probably tend to help them out with that, a lot.

Programming an effective expert system for such a complex game is a huge task. Making it deal with mods is even trickier.

Moreover, expecting an AI for such a game to prove challenging to smart veteran human strategy game players, even after they have a lot of play experience, without giving the AI advantages, is very unrealistic.

PvK