If you like you’re sci-fi it’s definitely worth a look and if you allow for the star trek season 1 quality discount you’ll find something to like in it.
I’m also a big bab5 fan and the first season of that is pretty terrible save for about half a dozen key episodes.
Expanse definitely has the scope to achieve what Bab 5 did well before box sets were a thing. Albeit without the galaxy wide focus. It’s far more grounded in our present reality and understanding of physics than b5.