It would be best, IMO, if they provided civic options that allowed us to create overarching forms of governance such as this. Maybe even cooler if you line up the civic choices a certain way, such as if you picked each category in line with communism - your government would actually say that and you'd get a small bonus on top of the base civic choice bonuses. Do this for each kind of government. It would need a LOT of work but it's an interesting idea. As for resources being more valuable...they're already the most valuable tiles in the game hands down. I stand by the assertion that the reason they don't seem so is that the AI doesn't treat them as well as it could. If the AI REALLY cared, you could keep the base values for oil, uranium, and so forth but just make the SP experience more plausible by having the AI gun for it or try to remove others' access to it. Maybe not invade just for some sugar but as a nation has more it appears juicier or something.