Assume an LLM trained on your favorite writer / fiction series was indistinguishable from the original. Would you spend time reading infinite content in that literary universe?

i.e. The Foundation or Dune but the ability to zip backward or forward in the timeline

Beautiful question. 

I think a major part of what makes a content great is also the social aspect of it. 

As long as the content:

a) has consistent storyline irrespective of the volume of content 
b) has at least some high quality
b) and also social consensus on what’s high quality 

Why not? Throw me some LLM LOT