burntselena wrote:
I am debating whether I want to include the History of the DC Universe and History of the Multiverse pages from the pages of 52 and Countdown. It would beef up the page count of the final volume and might be a bit excessive.

I can't remember if DC was planning to release the 52/Countdown back-ups as a trade. Maybe with the release of the new Who's Who?

And you can also include Comics Interview #26 which has an interview with Marv Wolfman & Bob Greenberger about COIE.