All this is way more complex than what we have at he.wikisource.
We only link the main ns0 page of a work, and usually we have only one edition of it. We don't use the index NS much, (since most of our books are either manually typed-in or OCRed privately and the text uploaded, either before or after having been proofread. If not proofread, we add a template).
This is the way our veteran users have gotten used to run things. I guess it drives would-be newcomers away. But we've been experimenting with a few works done with the Index:/Page: interface and it seems even more confusing to newcomers who don't know how to create a book from the proofread pages and see an accomplished result for their efforts.