"The previous incarnation of Justice League was not selling at all and filled with characters that no one had heard of. The guys writing it were good but they working with really hopeless material. I had told DC that I wanted to do some more superheroes and I made a list of the ones I liked. They said, “Everything’s taken here, but by chance Justice League’s come up, is there anything you can do with the book, because it’s dead?” I told them I could do Justice League but that we had to have all the top characters in it. They said they thought it wouldn’t sell, and I said, “Let me do this, and I promise you it will sell.” Throughout writing the first eight issues of JLA I was constantly told it was going to be a disaster."
Grant Morrison, as interviewed by Mark Salisbury in Writers on Comics Scriptwriting, Volume 1 (via fuckyeahgrantmorrison)
Yeah, putting Batman, Superman, Wonder Woman, Aquaman, the Martian Manhunter, Green Lantern (Kyle Rayner) and the Flash (Wally West) in a smart, action-packed JLA comic is a terrible sales idea.