Thank you for sharing this lovely provocation with us who could not attend SPLASH! I've been deep in the cybernetics -- constructivism archives, but really there are no young people there and I'm sad about it.
I want to take more of an oblique tack to this question about liveness, nondeterminism, and excessive rumination. My friends have written a paper about narrative sandbox games as `inviting repair', i.e. as casual livecoding platforms.
https://mkremins.github.io/publications/ReparativePlay_ICIDS2021.pdf