I have to second this. The parties motives, Mars and Inaros, make so much sense. Hard to convey that level of detail and complexity in a TV show. They managed to explain most Mars motivation rather well so, in the arc where Bobbie is chasing black marketeers.
I could imagine, so, that season 6 will answer most of these questions.
The Expanse was never a planet-of-the-week show. Exploring the impact of the new planets on the solar system and its people is also important.
One thing I'm a bit disappointed is the fact that they drop part of Mars storyline.