I think the goal of the book is to show programmers a new type of web development available to them. However, very few people could make use of that without understanding how persistence plays into the design. It doesn’t need to be complex.
I’m pretty confident that you’ll want to be closer to Saša’s style. The processes-for-everything style presented in early versions of the book creates a big spanning tree of mutable data with the added problem of being overly complex. You lose too many advantages of functional programming that way.
I expect the book will improve on both of these fronts.
