I voted "neither/both".
I liked what they initially tried to do with "Earth-2", with a modern take of the Justice Society, with a young Alan Scott and company. I hated that they shoe-horned all things Apocalypse, culminating in the death of that world's Pa Kent. Bleh. But, again, I liked the modern take of the JSA, so that should stay.
I also liked the legacy aspect of the JSA, too, so that should remain on Earth-0.