David, Rob-

Here's a general outline for the wireframe. I went for listing desired
functionality rather than listing pages since it's hard to know exactly
what constitutes a page anymore.

Let me know your thoughts. 

-sb

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Areas of Use

Start a Book
  - import existing book
  - start from scratch
       - add basic info (title, subject, authors)  
       - add chapter
       - add section
       - add text content
       - add math content
       - add structured content (theorems, proofs, sidebar)
       - add other media (image, video)
       - edit all of the above
       - move all of the above

Contribute to a Book
   - submit content
   - submit a correction
   - upvote/downvote a correction or a contribution

Manage a Book
   - approve a correction or a contribution
   - assign roles
   - request help (copyediting, images, etc)

Use a Book
   - read it online (navigate chapters, hyperlink between pages, turn pages, search)
   - download (pdf, epub, etc)

Book Home Page
   - basic info (title, subject, author(s), description)
   - completion status and vitality
   - usage stats (downloads, number of contributors, school adoptions)
   - user rating
   - activity stream
   - editions
   - open requests

User Home Page
   - basic info
   - books (authored, contributed to, interested in)
   - status of contributions

Platform Home Page
   - featured books
   - featured authors
   - featured contributors