I would argue that Jin and Hakumen are two completely different characters. So what ever good Hakumen does should not be counted as good for Jin. Most of the shit Jin does irritates Hakumen. I really haven't seen much character development from Jin at all. I don't know what's going to happen in CP, but in the first two games he hardly changed. He was still crazy and didn't hesitate to kill anyone who got in his way.
In my opinion he only cares about Tsubaki, Ragna, and Makoto. I can't think of anyone else he gives two craps about.
Ragna on the other hand has shown that he has a soft spot for Noel, Taokaka, Rachel, Jubei, Nu (sort of), and at the very least he seems neutral to Kokonoe after she fixed his arm. Plus, I wouldn't say he hates Jin all that much anymore.