Currently playing as Avelorn at the moment, and Nagarythe have conquered the shadowlands in Averlorn. I was considering confederating them, but I'm aware that I'll lose the 'suitability' to that climate which they have and I don't.

Is there a way to mod this so that you gain the faction effects the person you're confederating with (if different)? I imagine it'd need to be scripting, but hoping someone could point me in the right direction.