Heya, I've played a game with the last enxtension. This is just the base quick scenario with spire .I managed to call imperial spire fleet thing but it's AI seems not that great :
This is after nearly 4 hours after releasing
the kraken the fleet, and the imperial fleet IA is driving me crazy by repeatedly going just to the laaaast planet before final one ! I've seen up to 70k in fleet strengh on this planet, so it has definitely enough to finish this.
At this point, it seems my game is doomed, at 1500 AI progress it's really getting hard to stay alive, without luck with the imperial fleet for defence.