well that may be true, but as time goes by you would have to change the map completly but still make it historically correct and for that you would need a premade map which the computer would be able to load. im not saying your idea is bad or anything just a tiny overkill. to begin with maybe you should only take 50 year. that way it would be easier to know as a player what to do, and as a developer you wouldnt have to make that many premade maps. boom every one is happy