After my 300 turn satsuma campaign (and 300 attempt to access the forum) I have the following to say.
CAI:-Many armies get stuck at the map, not moving anywhere. Some stands there for 20, 50, 100 and even 200 turns at the same location.
-AI not aggressive at all IMO, they have the army to crush me but like above, they dont move army-Rarely/never attacks with many armies at once.
-To many 1 boat army on the sea.-AI are very slow to develop their provinces, still in turn 300 none of the AI provinces couldnt build more then 4 buildings in their settlements.
-AI armies ALWAYS runs away when you are attacking, even thought they have a MUCH bigger army then you. At the end, I needed to have assassin with me to sabote the enemy's army just to be able to fight battles. (PITA!!!!)
-AI never attacker when they are sieging or when you are sieging.
BAI Naval.
-The battles are good when it first starts but I have seen that the enemy boat flees to the edge of the map.
-Other than that, I like the naval battles, never see any gunboats which is very good
BAI
-Cavalry tends to flank which is good but sometimes they just charge the front
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Enemy units dont use kneel fire
-Besides that, I like it.
But, it was just at turn 180 when the remaining clans declared war on me the game got good, before that they were never attacking me so I could just siege settlements by settlements.