Perhaps it's a silly idea, but I'd love to see some sort of "Mended Valley": there is an established pun in Pratchett's books where the Broken Drum pub became the Mended Drum after it burnt down, and we also know that at least some of the inhabitants of Broken Valley survived whether by luck or judgement. I know there's a whole world of new places to explore, but Broken Valley remains one of my all-time favourite videogame locations and I was terribly sad about what happened; I'd love to return to its green pleasantness. Well, and its psychotic fauna too.