The optics of the show are amazing this season. This season all the main characters are apart and we gotta see their backstory (it's about time since it's the fifth season). It loses a bit of its economic implications, both Earth, Mars and the Belt are all capitalist. I thought that Mars' political economy worked differently as they gave it a Soviet/Chinese aesthetic but it's actually very capitalist as confirmed by this season. That's a bit disappointing.
I like it so far. The villains are pretty quickly established so far but there are still mysteries to solve.
Also, they're putting sexual tension into the scene everytime there is a scene with a man and a woman. Not sure what's that about but 100% this season a character will end up banging a character they're not supposed to.