Cambell's art is basically mediocre. He knows very few body types, 2 female faces and tried desperately to pass his art off as "manga" because it was the mid-90s when anime & manga were hitting the US hard, when he's really just trying to badly copy the style and still isn't good at it. If he were drawing hentai he'd be on par with typical online hentai artists, but he wants to be a "professional" so he won't even go that far which is a shame because his art is suitable for hentai and not much else.
But DC's purchase of Wildstorm killed the brand. Gen 13 got hit with a "kill everyone" ending just to have an abrupt ending. The DC "reboot" ended with some revelation it was all in Fairchild's mind in a span of maybe 1-2 seconds before she "died", then the second reboot was another delusion because the bomb didn't kill her but turned her into Clayface. Then what was left of Wildstorm got absorbed into DC through the Flashpoint reset. Only 2 Gen 13 characters got salvaged- Fairchild is now a flat-chested girl who can use science to bulk up into her big-chested hero form, Grunge is now just DC's version of Absorbing Man as a villain character.
I don't think DC ever knew what to do with Wildstorm. They coudln't fit any f the existing titles into their company plan and killed them off. Their Thundercats book was awful furry fetish shit with a bunch of rape stuff to try to be "mature" and I think it was universally hated for being shit. In the end they said "fuck it" and kept only a couple of concepts just to try and pretend they didn't waste money.