The day Noh-Varr did wrong to Kate was the day he was blacklisted forever. The whole point of the breakup originally was that Noh-Varr was an avatar of his fans. Those who desperately wanted Morrison back. Oubliette was the representation of that era in Marvel Boy, the one mini that everyone praise, while Kate represented the idea that changes in one character's history can be for the better. It was supposed to be this whole meta commentary on the history of Marvel Boy. However, most people took it completely out of context and all they saw was Kate = sad, white male ex = bad. Which is why no one is asking for his come back and no one cares about his bad characterization in books like West Coast Avengers (pic related for example is waaay out of character for a guy who has a half-skrull as friend, but since it's established Noh-Varr is problematic then he has to say problematic stuff). Ironically, he has been Hank Pymed for his involvement with Kate since he can't escape her shadow anymore. Because of that breakup, you can be sure a story that involves him will at some point reference Kate in some way.