Dunno if it's been mentioned, but I've been playing as Tokugawa with Oda/Tokugawa vassal thing and I've gotten deep into my campaign before I realized that I cannot declare war on any other faction even if Oda is at war with them.
Not only that, but I CANNOT declare war on Oda either. I"ve been trying to piss Oda off even to the point of making my entire faction christian, but they wont attack me.
Just figured I'd report this, also I dont have any other mods installed. Just Darthmod.