I tested the Mega AI (I think that's what it's called). I only found one bug, and it was not the same one as before. The bug I found was that when you have a building which does only upgrades, and all of the upgrades have been finished, the resources at the top will be darker, like the upgrade buttons are. For example, the Divination Crystal in Dark Magic researches "hellfire" and "aeromancy". Once I had researched both and they were finished researching, the resource icons get darker if you select that building, but they go back to normal if I deselect the building.
I was playing with fog of war disabled, if that matters. I really wanted to see what the Mega AI was doing.
I noticed a nice AI feature. My defensive buildings seemed to attack opposing defense before other buildings, which were in the order of proximity. Nice work! I think there was another AI feature I noticed, but I forgot it. Oh yea, they attacked my base from different positions I think. My base had a back entrance, and I didn't expect the AI to ever attack there, because it usually just attacks from a straight line from its base.
Teaching the AI game tactics would be a nice feature. For example, the AI could just randomly turtle sometimes, or sometimes use other methods. This would be something you could choose in the game setup, or just set to random.