I think the AI strategy file for several races needs some fixing. I refer to "do not shoot on planets := true" firing in all strategies but "capture planet". I know the idea was to prevent AI from glassing planets and force it to invade. Unfortunately, it does not work as intended. many times I saw this picture - fleet with "capture planet strategy" attacks planet: The fleet has attack ships with, for example, "optimal firing range" strategy and loaded troop transports with "capture planet". Troop transports flee to the corner and wait for attack ships to kill WP. BUT attack ships have the instruction "do not fire on planet := true" in ship strategies !! They just hang around till the ned. No planet with WP can be captured by these races
Please restore "don't fire on planets := false" for attack ships ! Yes, AI will glass planets but at least it will capture if troop transports are in the fleet.