[Q]

That is a important improvement.
Did you change anything about attack location evaluation and the orders for fleets to attack them? That is still number 1 weakness of the AI IMO. Especially if there is only one enemy (AI team mode) and the enemy systems are more distant, the AI is completely defensive.
Another point is the apparent inability of the AI to remember that a warp point is heavily defended: the AI will send one lonely scout/transport ship/colonizer after the other in a suicide mission.