I would like to see city states be more threatening in the late game. I find that usually they are mostly allied with someone by the end, taken over for strategic advantage of city placement or completely ignored. IRL modern small powers can really set the tone of modern international politics. Think of North Korea or other small powers which can do a lot of damage actively to the world stage. Even if they are allied they should still create a ruckus. (As NK is nominally allied with China, the reason for them not simply being taken over by the south for all their crazy antics.) - A CS which has uranium, is hostile and military could choose to build nukes, making attacking them (or their allies) more risky. - A CS which is hostile and religious could harbour terrorists, in the form of a barbarian alliance, protecting barb villages in their territory? - A CS which is hostile and mercantile could try to pillage trade routes going through its territory but not linking to itself (without declaring war). - A CS which is maritime and hostile could create barb pirate ships which go out and kill things. - A CS which is hostile and cultured could do... something... cool... I guess... What do you guys think?