I like the way FOTS works where basically it's 1vs1 in the endgame with the Shogunate supporters vs the Imperial Supporters, but I wonder how a three way war for Japan would work in FOTS's setting. So, I basically want to figure out how, if I can, change faction religion and change some northern clans like the Matsumae and maybe Satsuma into Republic supporting clans (Because of the Satsuma rebellion).

I would also like to know how to do this for regular Shogun 2, because I use the expanded mod, and I'd like to see how to make the Ikko Ikki and Christianity more prevalent. I know there's a "religion war" mod for vanilla, but it doesn't work for expanded Japan.