I watched Jessica Jones last, after I watched Iron Fist when it was released. It is my number 2 of all the series they've done so far, realistically damn close to being, and in some cases is, my number one. I had watched half of a random episode at some point, and from that didn't think I'd like it. After Iron Fist was a huge disappointment, one of my coworkers all but forced me to watch JJ. David Tenant's Kilgrave was definitely a big part of my enjoyment, and I agree that he had an actual menace to him that villains often lack. I could see them pulling the he's alive in her mind schtick, or even having him mind hopped to one of the people that was there at the end, and would be perfectly alright with either of those cop outs just because of how good he was in the role.