It helps this year because we don't really have to move anybody if we moved Dotchin and Coburn or just Callahan. We have one more run with this group. After that it changes.
Adding Karlsson would be huge and the production he would have here would be great but we also have Hedman getting 70 points unable to force his teammates to get to the net. I don't think Karlsson would have forced our forwards to the net simply because he's Erik Karlsson. He adds more traffic there with shooting and creating chances but we had no traffic in front of Holtby for nearly the entire series.
It might not even take a personnel addition, it could simply be a different style from Halpern that could make these guys more effective. The problem was being one dimensional and not having a response to being stifled. If Halpern could change that and provide another element to our game then maybe we don't get stumped as easily.
Hedman's offense is very good, but he's in Karlsson tier because he's better defensively. Karlsson remains in a different stratosphere offensively. While I agree a greasy-goal forward would be a great add, there's just no way Karlsson wouldn't be a massive improvement. There's no team in the league who wouldn't be better by adding, at worst, a top-5 defenseman.
I do believe the main improvements we're going to see this year are going to come from the coaching switcharoos, not personnel. Our personnel is already as good as anybody in the league, but the crazy decisions/gameplans over the years, IMO, have held us back.