I like the scrap guns idea. It makes sense, considering the horribly restrictive gun laws in the U.K. And I was thinking that I could work on post-war politics. I've been playing with the idea of a few factions; putting some depth into the Royal Family, a group that had regressed into a Medieval society that's living in a big sexy castle, and how the people of the Underground think about the people living above them and vice-versa.