I think you might enjoy the TV show more than the book. I saw the first couple of seasons of the TV show, then read this book. I haven’t read any of the other books. I have watched the rest of the TV show, which does not strictly adhere to the books. There’s a significant female protagonist in the show right from the start of the first season who I understand turns up in the books much later. The first season of the TV show has the detective in space on his quest as one of the major plot threads, but by the end of the first season the show is not about that at all. Throughout the show's run there are obvious non-hetrosexual relationships and even polyamory. Unlike Galactic Commons universe, the only scope for diversity is within humanity. And whatever that blue stuff is.