The comic book series is something of a modern marvel. There's nothing wrong with it. The story is consistently engaging, the characters are both likable and believable, and the artwork is fantastic. AMC's TV adaptation of the series, which hasn't premiered yet, has already garnered acclaim (and a second season order!). Why not expand the franchise? That is, as long as Robert Kirkman is writing!
"According to Publishers Marketplace, Kirkman made a deal for "a trilogy set in the zombie-infested world from Kirkman's New York Times bestselling comic book series as well as the upcoming AMC television show." The books will also be called, although I'd bet on some kind of subtitle for each book. Kirkman will co-author the books with horror novelist Jay Bonansinga, and Brendan Deneen will edit them for Thomas Dunne Books."
- King of the Zombies