RPG Book Layouts

So what shold you expect to see when you open an RPG book or how should you lay out your books if your a publisher?
There are many examples out there, pretty much every company follows a few simple rules though and I have been trying to follow them with Skyfell. So here for you all is the short list of what should be in a book and in what order... feel free to disagree with me, there is no right or wrong here but I would be interested in others thoughts on the matter:

1. Table of Contents
2. Fiction (if you need it)
3. Overview
4. Setting
5. Rules
6. Campaign Ideas including adventure seeds and first level scenario(s)
7. Maps
8. Index (A must for all books!!!!)
9. Character Sheet