Great to see you back Thomas, awesome news about a new version coming out. I thhink it's an excellent idea making having copper/iron not an automatic 'i win' button it really did cripple many AIs if they had no way to make better units. Something else you might look into is the oil -> chemicals issue in that you technically have chemicals researched and can build the chemical plant but cannot produce the chemicals because the oil isn't available until combustion gives you wells. edit: I havent played in a while so after looking at the tech chart again the issue also involves heating oil being revealed with refining but still you cannot get the crude oil to make it until the combustion tech which comes later. If oil wells were just moved to either the scientific method or refining techs I think this would resolve the issue. As always thanks for giving us something to play instead of that Civ V mess.