Let's ask this question a different way. If we were to ask Geoff S to write a modern day Lines of Charm, would he come up with the substance that is in the original book?
I own and have read Fazio's book. Do you think anything from it would make it into the new book?
He could, if he was inclined to, but he's not!
I agree that Faz' book is just a bit light on the strategy, etc. I recall comments like not putting too many bunkers on the right of the green, sort of defensive "what I would not do" comments, not here is what I would do. The book was more about the presentation of the courses, which is his focus.
But if Geoff covered Pete Dye, JN, or a few others, there is substance. JN included an example of playing strategy on his holes, a discussion of his use of Redans, etc.
Frankly, how much substance is there to "Lines of Charm?" Geoff has devoted a better part of a half dozen books to explaining "hit it near a fw hazard for a better line to the pin" and this book was near the end of the line (unless more are coming) Personally, I think we are ready for the next generation of strategy books, focusing on what has changed in golf strategic thinking, not what we hope will come back.
The closest yet is Paul Daley's series of 3 books, where several architects contribute strategic thoughts, including me on tee shots (a low point of the book to be sure!) and Tim Liddy (I think) on Pete Dye's reversal of traditional strategy of alternating bunkers inside-outside to "inside-inside" to better challenge good players and make it easier for others. There were others as well, but I don't have the book in front of me.