One of the most insane things you can do is recommend someone watch multiple seasons of TV more than once. But here we are.
The first time I watched The Expanse, I watched it entirely by myself* as a binge-watch. I think I made it through the first five seasons in about three weeks (the sixth had not started yet), which is simply not a thing I do.
Spoiler - my least favorite season of the show was the fourth season, which I still liked, but felt like the one season where I felt I'd seen this same sort of thing elsewhere. On a rewatch, I better appreciate how the Western-like settlement and tensions between moneyed and non-moneyed pioneers informs the overall arc of the show.
The Fifth Season, which brings the character, political and story arc threads of the show to a head, while simultaneously splintering our Rocinante-based space-fam, was one I'd quite liked the first go-thru. On a second viewing, I liked it even more.
The issues our characters brought into the series at its start finally have time to get some spotlight, all against a backdrop of the inevitable consequences of the centuries of exploitation of the Belt (for whom you can apply a dozen real-world analogies) coming to bear.