introducing kilgrave so early does so many things that are a negative in my view. one, we don't get to see jessica be jessica. not only does it not allow us to see where she is in her life, what her day to day is like, or how she interacts with people/stress/her job, but her life becomes quickly defined by kilgrave. in the books, this really isn't the case. jessica is damaged by her ordeal with kilgrave, but it's more than just her time with him - it's a combination of things that led her to become the way she was. we don't get to see that.
this could have better set up the world too. in 'alias', jessica jones investigates superpowered people. maybe not every case she took up could have been related to this, but it would have made it more acceptable to the viewer by the time kilgrave shows up.
showing kilgrave early also lessens his impact on the story. the best parts are when he's in the background and this sort of haunting figure. i said in the other thread that he should have been introduced maybe in episode 7 or so, where that's the 'hope' incident (i hate that they named this character 'hope'). jessica could have some nightmares of her time (maybe she'll be asleep and we just 'hear' her dreams, or just kilgrave shouting her name), but we don't know what exactly it means, just that it bothers her. maybe there could be a case before kilgrave where it seems like there's this guy who has mind control, or a very weak version of it, and jessica is sort of relieved it's not him, and then we get some sort of explanation as to why she was worried or something instead of even having a flashback.
the dude is also a super asshole. i don't know why they went the route of trying to sympathize with him. or if that wasn't the intention, why have him actually help people and show love for his mom? kilgrave is compelling because he seems like this force of nature, and they're trying to reign him in and control him so he can be tried by the system. after simpson and walker repeatedly tell jones to kill him and she doesn't, i thought she would stick by her beliefs. when she makes the decision to kill him, the conflict loses whatever tension it had because not only is she super strong, but she can't be influenced by his powers either. there's nothing interesting going on in the final episode as a result.
and there are a lot of other things - killing the black cop who was 2 years from retirement (seriously?), will simpson being a charisma vampire, and other supporting characters being annoying, boring, or useless to the rest of the story.