Warner Bros fukked up everything from the start (apart from The Dark Knight saga, which should be credited exclusively to Christopher Nolan, his brother, Goyer, and Bale)
-Miscast Ryan Reynold's as Green Latern when he was BORN to play Flash
-Not getting a credible writer/director to get a Wonder Woman movie popping
-Waiting until the LAST minute to get Man Of Steel in production (when I say last minute I mean in regards to their supposed "rush" to get Justice League in theaters by 2015)
-Not dumping a carnival cruise load of cash at Nolan's door after Batman Begins became a hit to get him invested in producing/overseeing JL's development. He could have been the Godfather for the entire roster if they would have showed early faith in him