100%. I read the entire series Miller is the only character who is actually interesting. They tried real hard to add arcs to the others and I think they all fell flat.My theory with The Expanse is Abraham and Frank had a really cool story idea around a gumshoe and a rich girl that ends with the discovery of a new alien life form on Venus. And they did so well with it they went "we can do anything" rather than "we wrote a closed-loop story with two interesting characters in it that we just killed off and now we need to make Holden and Naomi interesting for as long as we can, despite the fact that their principle character traits are whininess and petulance." It's like trying to write the Jack Reacher series after you've killed Jack in Book 1.