or maybe it's just a 25yo guy having problem dealing with the pressure of a new big contract?
IMHO, he needs some positive reinforcement. It seems that this guy has to deal with way too much. If they'd cut him loose once in a while, I'm sure he'd play a lot better overall.
His style is to combine risks with rewards. I understand that as a coach, you don't want to take the bad with the good, so you try to eliminate the bad. Unfortunately, in doing so, you eliminate the good as well.
Subban was a force to be reckoned with on the PP last year. He had 23 points in those situations. This season, he has 2! TWO! He doesn't take lots of shots and always hesitates and is now prone to throwing the puck instead. It doesn't work. And I'm sure that's not his idea, either. The 1-3-1 system will hopefully promote more shooting. He's got a fantastic cannon and should be using it way more often.