and what powers will you change?
I would reboot Alan Scott into the main earth as a meta with telekinesis similar to Invisible Woman of Fantastic Four. Would reboot most of the golden age Society characters into the main earth as metas. Jay Garrick can be a meta speedster like Quicksilver with no code name. Kendra Saunders can have bird powers with claws on all 4 limbs similar to Swift (stormwatch, authority) and Northwind.