Pages' Structure Design

Are there any good detailed guidelines on how to structure your page hierarchy? i.e. the page tree structure under /content/<project>/.. ?

Usually, at the root level, you have the home page and the different sections of your site (.e.g if it's an ecomm site you may have books, electronics, etc..as sections). Under them you'd have sub-sections or the actual pages. This seems to be the standard hierarchy I've seen in many AEM implementations. Any thoughts on whether this is adequate or when it'll be better to go for a different kind of structure?

I know there's David's model but info given there is brief and it seems to be about content design in a very general sense rather than specifically about page design.

Thanks for any thoughts on this.