I'm a Sox, Pats, Celts... and Habs fan. I'm also a pretty strong optimist when it comes to roster moves, perhaps because I've lived through the Belichick era. However, this trade is an absolute disaster. I can't imagine how Bergevin was convincing himself that this was the right move to make. I've never been a huge fan of the diving stuff that Subban would get into from time to time, but the dude was an electric hockey player. Although he was flashy and could be seen carrying the puck through the neutral zone, he was for the most part an unselfish player who made everyone around him better. Not to mention the $10 million he donated to the Children's Hospital.
Shea Weber is a great defenseman in his own right, but there are signs that there could be some decline. I admittedly haven't watched him enough on the Preds to know the extent of the decline, but the season seemed to be a little long for him as he was slow during the playoffs. He is supposedly a high character guy and he'll certainly by fun to watch on the power play with Markov, but so was Subban.
I'm never convinced about locker room feud conspiracies, but I have a strong feeling that this was the breaking point between Therrien and Subban. Also the Montreal media, constantly dogging Subban and creating trade rumors. I don't know how or if it affected Bergevin (as I think he is a professional), but it's a shocker to me.