This is a fascinating idea. So the format for the reader AND writer is an organic layering PROCESS rather than a static, single-level book experienced from page 1 to the end?
This seems almost a game-like architecture as opposed to narrative. Am I getting the right idea?
This gives me an idea for a 21st century epic poem which is a tale and an omniverse in which anyone could add content. The content could be prose, video, poetry, audio, or multi-player game. As its mythology, symbolism and thematic character evolves, it becomes like a cultural mirror that we hold up to ourselves.
An individual can provide their own literary "path" through the tale via social media for example. It would say, "this is who I am in relation to the tale."
Wow, this French Roast coffee is good stuff.

Sorry for the digression.