Except for the latest original story I did for Predators, I was dealing with graphic novels that needed to be translated to book form. I though I did an okay job on those, I added some things that I thought worked, but the real credit goes to Dark Horse -- the writers, artists, editors, and publisher. They had some really good ideas, and I wish the movie folks would have used them.
My small contribution to the series (with my daughter) had to do with the Predators's backstory, a small bit of their culture, and we were pleased with how that came out.
Some fans loved it, some hated it, but that's how it goes. Never please everybody in a universe like this.