Most freelancers seem to be concerned about being out of the loop if people followed this advice. I can feel that, too: IMO clients almost always benefit from the improvements I make to whatever they were planning.

But what I really wonder is how many people even could follow this advice. In the years I've been freelancing I don't think I've ever received even a single feature request that was thought out to the every click, every branch level of detail--let alone an entire application.