AI needs to construct more seige equipment

[Triumvere]

Not siege engines, mind you, but rams, ladders and towers. Right now the AI is doing suicide attacks against well defended walls by only bringing in 2 siege towers and 4+ rams. One of the towers will burn (thanks ballista towers!) and maybe a ram. The remaining tower will be insufficient to take the walls, and then - when the gate goes down - all the enemy will charge in to their deaths - spearmen will hold the gate while boiling oil does the rest. When the general goes down the entire mob will break and be crushed to death trying to get out. I killed 3000+ Mongols this way.

Some of these defeats could be victories if the AI simply had the sense to wait an extra turn and add 4 seige ladder or 2 extra seige towers. How can I get them to do this?

[Gigantus]

Check with Xeryx, he has got a good AI going. Don't think many people know more then him.

[Taiji]

Make a trait that works for the AI only and slap a load of engineering bonus on it.

[Triumvere]

Make a trait that works for the AI only and slap a load of engineering bonus on it.

Mmmm. I thought of that, but I'm not sure how much it would help. It would probably just mean that the AI assaults on the second turn of the seige instead of the third. If it was a huge number of points you might get more towers, or you might just get more rams; in the last battle I think the AI made 6 even though it only attempted to breach one gate. Furthermore, when the gate fell the towers were abandoned and all the troops rushed in....

Edit: I am currently playing with low recruit priority numbers for siege engines, to avoid the "seige only" armies of yore (aka vanilla). Over all I am happy with this, but I may have to tweak them up in order to make up for the poor siege AI.