Montreal fans seem to like Bitten, so sure, why not? Olofsson was not going anywhere on this team.
Those who would follow the prospects liked what Bitten brought. He can produce, but looking at his stats, it's not like it jumps out at you. What he does bring is a lot of energy. The kid's motor always runs. And he's super quick. I always likened him to a Byron/Gallagher hybrid, but a notch below those two. He is sometimes a little too fast for his own good. He will waste an opportunity because he is too fast for the play and is ahead of the play and he has to work on blending his stick handling when he carries the puck at warp speed. Sometimes he will mishandle the puck or go so fast that he gets in too close too quickly on the opposition and is easily countered. But he can work on all of that in the pros.
I think he will play in the NHL, but I don't think he'll be a Top-6. He may surpass that expectation, as has been the case with many players, but I see him as a Bottom-6 and even more a 4th liner or, at worse, a career AHL'er. But Wild fans should be happy they acquired him.
As for Montreal, what they're looking for are young left defensemen who will play in the AHL but have NHL experience for a call up. They don't really have many of those. They acquired Kulak from Calgary a few days before this trade. They will both start in Laval and at some point, I can see Kulak and/or Olofsson get the call due to injuries or to simply replace the likes of Benn, Alzner or Schlemko on the third pair.
With Minnesota's depth on the back end, Habs are trying to get some players they think are good enough but are just victims of the other team's depth at that position. They did that with Mike Reilly last trade deadline, and he's been the team's best defenseman this training camp, preseason, and on the first game against the Leafs on opening night.