Yeah, its not like a coach that is asked about a player goes and check the game-log at espn.com. You have the negotiation part between the general managers, that is a bit of a 'game' at times and simply a highest bidder procedure at other times. Of course recent stats can have an impact.
But lets say AV coaches another team in the NHL next year and is asked about whether Mike Hoffman would be an interesting addition -- on what would AV base his opinion on Hoffman on? He would of course try to get an updated view on were he is at in general, injuries and form and what not, but so much would be seen against the background of that POs series a few years earlier when Hoffman pretty much alone destroyed AVs team. Does it matter if he have 12 or 16 pts in his last 20 games?
That is one part. Another big part is how you envision a guy to fit in on your team. Maybe you want to light a fire under a group of players, and you want to bring in like a Leo Komarov or someone like that. Or you don't want to disrupt something, then you might be very careful to bring in a bigger personality. When Boston got Nash I am sure it played a big part that he was so established as a team guy, someone that for example team Canada coaches always raved about because he would just assume whatever duties he were assigned without a fuzz, and so forth.
From my POV, Zucc is a perfect add from an on-ice perspective. Many more talented forwards would be pretty lost if they were like put on a 4th line, Zucc is the opposite. You can more or less assign him any role and he can do an OK job at it. He can be the one guy who takes the most defensive responsibility on his line, he can be the guy that works the boards in the attacking zone, he can be the set up guy and even more of a finisher. Off the ice I think he has a reputation in the inner circles of the NHL that actually differs a bit from what many fans would bet at. I know that he can be lazy at certain drills during practice etc. Then he will be more focused and really really competitive in other drills. He creates a bit of tension, I think he does it in part to motivate himself. When he gets eyes on him he motivates himself more. I remember when Torts was first asked about Zucc and he smiled, thought for a few seconds, and than said that he was just different. I didn't understand it at all back then, thought it was just more about Zucc being shy and stuff -- but after hearing smaller tidbits here and there for over a decade my picture differs pretty much from that.