NEWSARAMA interviews Brad Meltzer and he has some pretty interesting things to say about Identity Crisis (which I really do need to reread). I really agree with most of what he has to say, even when it sort of pisses me off. Most importantly though, he finally solves the mystery of why almost every IC tie-in was written by Geoff Johns, and why almost every Geoff Johns book has an IC tie-in:

"Beyond that, there were no long term plans worked out until the series was done, and almost all of those were with Geoff, who happened to be trapped in my house during the Baltimore hurricane a few years back.  He read the entire series right there and then we just got our geek on."