Okay... After all this years I still don't get why everyone references 1upt AI as something impossible to fix at all. It is really looks like some players just love doomstacks and blame 1upt for everything. Of course, doomstack "AI" is better because there is no tactical AI is actually required, but thad doesn't mean that 1upt is doomed. First of all, CivV BNW has much better AI and rules are almost the same. The only notable change is in movement rules, but it simply provides a smaller set of possible paths for units. Secondly, there are other games with quite similar tactical layer. Endless Legend for example. Of course, it is not the same, but at least AI is able to target most valuable targets, exploit weaknesses etc. and provide some challenge.