Exactly! If the mod designer does them harder than soft, the player responds by doing more anti-tank artillery than artillery. And the AI are crushedExpert AI recognized this a long time ago. Players developed different metas, that the AI couldn't adapt to. Expert AI gave you choices on what division types the AI could build. The base game doesn't.
So while the AI division builds can be changed, they will never be able to adapt to player changes, unless a different design approach is taken.
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