I disagree with people saying Wilson Fisk didn't feel "boss". As soon as he throws that first headbutt on the Russian, then proceeds to explode his head with a car door, I was terrified every time he was on screen. Even though he didn't feel totally like the comic character, I took it as an evolution of the character. All the stuttering and sense of insecurity I took as a man who was trying to hide who he was to himself, and being something he is not. It built all the way up to his quote from the bible, and that's when I felt he really evolved. Turned into the Kingpin.
I think we'll see the more of him being Kingpin of Crime in the next season, and I felt the slow build so satisfying. Especially when they finally threw down in the alley way. Really enjoyed all the headbutts as well.