Watched it as well. For some reason, the back of the show's first and second seasons have been stronger than the first half. I admit I was about ready to give up on this show about halfway into the season, but I was happy that I finished it out. I'm interested to see where they want to go next season, so I imagine I'll give it a few more episodes.
So I'm wondering how much of the mystery that is Liz Keen's history will play into the rest of the series. They promised real answers in this finale, and while there was some it didn't really feel like it was important enough to string out as long as they have over the course of the series.