Throughout my professional lifetime, I've watched talent go to Marvel or DC and occasionally other places, simply so they could work on Jack Kirby's characters. And do "their" version of Kirby. This includes people I consider friends. Again, it's one thing to have a good OMAC story in mind, but I'm talking about people whose greatest dream in life is to make their careers continuing Kirby characters. I don't think there was one of them who didn't believe their work on his characters somehow honored Kirby's contributions to the field. I only spoke to Jack twice in my life, but one of those times I asked him about this.
In fact, Jack did not feel honored. He wasn't upset about it, and didn't complain (like others I've known in similar positions have) that he hadn't been hired instead to work on his own characters. He was saddened. Why? Because he hadn't spent his career just working. He'd spent it creating, and constantly coming up with new characters and new creations wherever he had the chance.
What saddened him was that message – create your own, create your own, create your own - wasn't the legacy his career was leaving for new talents instead.