Well, I agree that we first need some testing done to see how AI build is influenced.
Unfortunately there's no "easy" way to observe what the AI build, and comparing builds with/without costs change will be even more difficult... And frankly I won't have enough time for that
If IW could give us some hint at how AI chooses builds we could save lots of testing

!
PvK,
Good idea about supply generation for AI commanders, will keep that in mind.