I've watched since the 02 championship season (I was 7)
As for Smith, I think everyone can agree that when he is on his game, he is a legit second pairing guy on any team, and due to his physical attributes and grit, looks damn good doing so. The problem is, for every time he goes into that mode is at least an equal time where he makes one of the dumbest defensive plays I've ever seen.
As for NYR trading for him, I think they were enamored with a small sample size of Smith, giving them unrealistic expectations. Smith is a likeable guy, and a player who visually does a lot of impressive stuff, but for all of it, very little is there to show at the end of the day.
I just think it's telling that both Babs and Blashill came to the same conclusion about Smith, even in our horrendous defensive shape.