https://comicbookdispatch.com/suicide-squad-11-preview/
I hate to say it but Ambush Bug brings up a great point...what does Waller see in Earth-3? I mean by DC obviously it’s a crossover sales purpose as people might buy Suicide Squad vs Crime Syndicate but there is a whole Omniverse out there.
So why if multiple earths exist, space between multiverse, multiverses between multiverses, and a dark multiverse would she want Earth-3?