You can tell reading the story that this was not the original story they were going to tell. Whatever Johns had been building up to with stuff like the Button and other stuff in Rebirth got shoved to the side by Didio in favor of the new direction DC was taking being led by guys like Bendis and King. I still say that all of the delays came from Johns having to basically rewrite the entire 2nd half of the story because of what other writers were doing that went directly against the story he had planned. It was a giant mess created by Didio and Bob Harras which left pretty much no one happy especially the people who had been excited about the build up after Rebirth.