I'm interested. Rather than having a nation, could I have a Court of Spirits or something? A very loose social body composed of the spirits that join it that sets boundaries concerning what the spirits that are part of it (and that they force to follow their rules) can and can't do when it comes to interacting with the mortal world. I'm thinking it'd be fun and interesting to plant spirits disguised as mortals throughout the nations and have them nudge things into happening as they see fit. Oh, and they can be affected by such things like magic, which could be used to bind them even against their will.