The finest pieces of Sci-Fi since Firefly, TNG, TOS, BSG, SGU, and DS9. The Expanse is hard to find fault with as every episode is so strong, The characters are changed in some positive ways on the show vs. the books. The only criticism I have is there is so much to the book series, it's almost impossible to fit into a TV show without going 9 or more seasons.
(Spoilers) I am so very disappointed to hear we may not get 3 more seasons to cover Persepolis Rising, Tiamat's Wrath, and Leviathan Falls. The fall of Earth/UN is really the half way point of the story, there is so much left to cover. I really trust someone with lots of money will again come to the rescue and complete the story to the end on TV. I can't recommend the Expanse and its showrunners more highly!