TamamoNoMaeChan

There is "become high king of skyrim" which is pretty much exactly what you're looking for. https://steamcommunity.com/sharedfiles/filedetails/?id=424131117 It allows you to marry either ulfric or elisif, kill both, or do neither at the cost of having a much harder time becoming king. you can also start a "war" with the thalmor. the mod is good but modifies alot of stuff which makes it incompatable with a lot of different mods. keep this in mind.