not so hard to believe if you remember how Jaime more or less reverted to his episode 1 personality.

I too don't really like the idea of making Kelly Ash's daughter, but all the rest do sound much better than the quickly and carelessly put together finale we saw.

I shouldn't comment since I didn't plan on watching this season after the catastrophic failure of the previous season's last two episodes (well, that and GRRM's failure to deliver the winds of winter in time), but I was coerced into watching at least this first episode.
And enough is enough. Up until season 5's…

it is not only possible, but evident you did miss something, since the Mateo and Diogo story shows tension between Belters and Martians, not Earthers. Pay attention.