This is a really great analysis for how to build and chain these types of events!

One aspect I've used a lot in workshops is randomness, like Try Trigger cards or Oblique Strategies. This can be used in a few different circumstances: to boost the variance of ideas when diverging, consider unknown constraints, throw interesting events in roleplay, and more.

I wrote a post about using this method with crazy eights here: https://uxdesign.cc/honing-crazy-eights-with-randomness-1c8100b94824