The Building Lines with AJ thread would be a great chapter -- I'm sure you can get 100 pages out of that alone. (assuming AJ ever finishes Quebec and Washington)
Collectively writing a book would be awesome. With the knowledge of this community, I think it would become more of an encyclopedia than anything!
* How to Play - Basics
* GENS/SNES differences
* Passing & Shooting
* The Art of Checking
* Inside the ROM - player attributes, etc
* Beginner/Intermediate/Advanced Scoring Strategies & Techniques
* Defensive Stragegies
* The Art of Goalie Control
* Building Starting Lines
* Bugs
* Appendix/Reference
Don't know about profitability, but it'd sure be fun!
BTW, this book is Ranked #29 on Amazon's "Books -- Sports & Outdoors -- Hockey" list...just ahead of the 2012 PHILADELPHIA FLYERS 12X12 WALL CALENDAR.
And it's 251 pages!