With your penchant for developing very different types of world and types of magic as you go from series to series are you ever tempted to allow other writers to expand your universes in the way George R. R. Martin does with the Wild Cards series? Open but controlled?
I have never been tempted by this, basically because I have so many things balanced in the Cosmere to not interfere with one another, to make the story come out the way I want. I would be worried about things breaking continuity. And if there are stories in these worlds worth telling, they’re stories I want to tell. That doesn’t mean I won’t eventually do something like that; I would consider it someday, but I haven’t considered it yet