I'm in the process of readingProcedural Storytelling in Game Design edited by Tanya X. Short and Tarn Adams, so it's on the top of my mind. It's worth at least skimming through if you end up going down that route.
That's a good read! I've used that as a base for talking to game devs about what I do in my research. It's interesting seeing the difference of sifting v.s. planning, though I might be more partial to the planning parts!