Finished JJ S2. Liked it, but didn't love it. Some of the subplots could have been handled better, the main plot felt too stretched out, and JJ's stubborn behavior and constant sarcasm actually started to wear on me. Spoiler: The final episode was very strong, and indicative of a positive change in JJ's life, but IMO this should have happened a long time ago (like, at the end of S1).
Also,Spoiler: the episode with ghost Killgrave reminded me of The Joker in Batman: Arkham Knight.