@the_stegman: If you were around a guy that big and strong who could go from zero to psycho without warning for no good reason it would scare the s**t out of you just as it would anyone else. I believe that was what they were going for.
@thor_parker82: THe fact that he loses his cool like that makes him nonthreatening to me. He should be more calm under pressure, less nervous, no speaking disorders ect... confident and deadly.
To be fair, (up to episode 6) he only beheaded that guy because he hit his "berserker button" (damaged relations with Vanessa), and he quickly recovered, forming a plan to destroy the Russians. For the most part, he's an intelligent mastermind, and has deadliness in spades.
I liked that his relationship with Vanessa was partially to blame for his downfall. She's always been a bit of an Achilles Heel for Kingpin. Tho I suppose there relationship being this new means we won't be seeing the Rose in the MCU anytime soon unless they're planning on changing Richard Fisk's backstory.