Question on AI ship building

[thorfrog]

Is there any way to have the AI create a wider range of attack ships? For example, make fleets with 5 distroyers, 4 cruisers, 2 battleships, and 1 carrier. Or a group of missile distroyers with battleship support. Some of the things I'd like to do for instance is change the Centauri AI to stick to smaller craft for attack and create larger ships for planetary assualt. The league of non-alliegned worlds should have an even wider range of ships of all types. I see that you can set a certain size on attack ships.