Thinking of another mod to start on once I finish my current mod, and I was thinking about having different settlements for different regions, thus having differet building chains based on region. It's a lot of work, but doable. What I'm curious about, is if you can have a choice of settlements when you occupy a razed settlement. The idea would be that the settlement is razed, then the player can choose between making this a Settlement A, B or C, each with their own unique building chains.