In my eyes, Metropolis should have three different main criminal organizations: The 100 (led by Tobias Whale in Metropolis), SKULL (led by the Atomic Skull), and whatever underground activities and organizations Lex Luthor's running. Intergang is non-existent to me. They're too closely tied to the new gods and jack kirby's fourth world, a setting i find really uninteresting. So if intergang ever existed, I imagine they've crumpled like a house of cards. Or they've at least gained way less significance then Metropolis's other organised crime groups.
The DCAU focusing on intergang makes little sense to me, as it's pretty much the exact opposite of how i'd have handled things. Also making Lex Luthor the one responsible for Metallo… that's just stealing a plotline they did with Metallo and The Atomic Skull in the comics. So I don't agree with too many of their decisions. Not having Supergirl be Superman's cousin. Not having Superman be a hero back in his Smallville days. It's dumb that DC and the DCAU erased some of the best elements of the Superman mythos.