The season started off really well, and it slowly started to lose steam along the way. Morello's backstory was probably my favorite part of this season. Gloria's backstory was pretty good too. Rosa's backstory and interaction with the kid who had cancer was also good to watch.
Everything else
It's sort of funny how Piper played the backseat this season. The whole purpose of the show was supposed to be about her character, but the side characters are far more interesting. I honestly don't see the show continuing past season 3.