New Krypton vs WWIII Black Adam
I bet Marvel would have kept New Krypton around in some form, and let Black Adam have his happy kingdom.. Damned DC editorial mandates and preserving a "status quo"...
So what happens is WWIII Black Adam tries rampaging through 100,000 Kryptonians? No named Kryptonians like Superman or Zod, just the rank and file citizens.