What if superman at the end of doomsday clock #7 is mad at dr Manhattan because not only did he caused Alan Scott to not become green lantern but also he caused the death of superman’s earth parents shown in doomsday clock #1
Well, technically, Vyntvyx is already known to be the one responsible for the death of Clark’s parents, as per Morrison’s run on Action Comics. That said, I wouldn’t be surprised if this story ends up bringing at least one of the Kents back from the dead.