My list of who I'd get for a modern day DC Challenge.
DC Challenge was a 12-issue comic book series produced by DC Comics from November 1985 to October 1986, as a round robin experiment in narrative. The book's tagline was "Can You Solve It Before We Do?"; reputedly, it was conceived during a rooftop party at a comic book convention.
The premise of DC Challenge was that each chapter would be written by a different author and illustrated by a different artist; no consultation between authors was permitted. As well, each chapter would end in a seemingly impossible cliffhanger (from which that chapter's author had to have planned a viable escape), and the name of the next chapter would be provided. Authors were free to use any character or concept from DC's (then) 50 years of publication, with the exception of those whose appearances they were currently writing.
The last issue of DC Challenge was a collaborative effort by the all the writers and all the artists.