My feelings on this trade are a microcosm of my feelings on the player in general. That is, I have nothing against him but I also think he's just a dime a dozen 4th liner and I'm not losing sleep over it, and that he has a very vocal group of supporters who think he does this rare thing. He doesn't.
I'm not saying the role doesn't exist, but he doesn't do it well.
If we're talking about checking in a meaningful way, he sucks at it. He rarely gets possession going for Rangers and in fact, excels at getting it going for the other team. That's the biggest issue here.
If we're talking about agitation, that's fine, but he's fallen off significantly there. It may be partially the coach, it may be partially the refs, but I just think NHL players don't pay mind to you if you can't hang with them on the ice. Guys stop caring about "I f***ed your sister" on the bench when they haven't noticed you on the ice all night.
And if we're talking about intimation or protection, I just don't buy it. Defensemen who are afraid to be hit don't last in the NHL. Players getting paid to be assholes aren't going to throw away millions because Lemieux might fight them.