How many factions are there?

I agree with Vortex. Indeed, a couple more factions could be added. There were already some ideas, and they were interesting and well-balanced. For example, the proposed Swamp or Nighon. What's wrong with them? They have a well-developed ideology, they are quite balanced, they are interesting, and they would appeal to those who played the third game and would like to see these factions in the fifth game; I think that's perfectly fine.