I also like that John’s has previously played around with the idea that there may be a separate/surviving version of Earth-Two existing outside the current universe/multiverse/metaverse.
1. In IC 5, the resurrected pre-Crisis Earth-Two of Alexander Luthor’s interim multiverse is identified as being devoid of life, having an artificial-like atmosphere and specifically stated to be an anomaly in contrast to the other resurrected worlds.
2. Bart Allen spends a number of years, during this time, on an alternate earth which he states has a Jay Garrick.
3. The original Earth-2 of the ‘52’ (depicted in the final issue of ‘52’ and one issue of Justice Society of America) was NOT the Earth-2 which was introduced in subsequent JSA issues ; the latter being a world ‘almost’ visually identical to the original Earth-Two and (from the perspective of its inhabitants) the only world to have survived the original CRISIS. It would be neat if this world, which was home to Justice Society Infinity, was the archived world of the pre-Crisis Earth-Two and not the Earth-2 of ‘52’ which had been originally depicted differently and which may have never actually been depicted beyond those few panels.