To be completely fair, while I agree that Kaine (for example) has absolutely become his own character, I think he is still a character whose origins are impossible to distance from Peter. Kaine is a clone, and that's important to his character, his story and motivations a lot of the time. This doesn't mean that Kaine can show on its own, it just means that he would actually lose if his connection with Peter was completely severed. I don't like Ben Reilly much, but I'm willing to jump in and say the same for him.