>>106413823They did with the original Lor-Zod, also known as Chris Kent. Born in the Phantom Zone, which made him immune to its effects, he was tortured and abused by Zod, Ursa, and other prisoners for all of his adolescence, and when he became around nine he escaped. Superman adopted him and treated him like a legitimate son, and was genuinely distraught when he was forced back into the Phantom Zone after a fight with Zod.
He later came back about 10-20 issues later much older during the New Krypton arc and World Without Superman as the new version of Krypton's hero, Nightwing.
DC bringing in Jon wasn't an awful idea, but in doing so, they deliberately eliminated Chris from ever existing, acting like the only other Superchild was Kara. Making it worse by bringing in the new Lor-Zod, which is just a shitty antagonist to parallel the who Super-Family dynamic but with villains. They ruined a decent character who hated his family and only wanted to do what's right, What Superman Would Do, and made him into Zod Jr. for Jon.