Doughty - reasonably good season on a team that didn't make the playoffs.
Subban - good season on a team that did make the playoffs and contended for division title
Karlsson - bad start to the season, brilliant latter 2/3 of the season, team squeaks into the playoffs after a record-setting run
I think EK has a good chance on this one. I think Stone will be a harder win, but achievable. These two would be both the icing and the sprinkles on the cake this season was.