I can't agree with bringing back Nolan for Justice League. That would be just as bad, although for different reasons, than Snyder's take on it will be, if not possibly even worse, as Nolan's style of filmmaking in this genre just wouldn't work with Justice League. His style works, arguably, for Batman, because Batman is not a superhero, but it wouldn't work for Wonder Woman, Aquaman, Flash, Green Lantern, and so on. We've already seen that it doesn't work with Superman, as he was very much involved in the making of Man of Steel.
The sad thing is, they've got a brilliant director already involved in this DC Universe in the form of Ben Affleck. I'd be much more interested in all of this if he were going to be directing some of these films in addition to starring them.