I think it's time to go back to 8-92-77 and 90-19-14. Not only do the possession numbers suggest that this would be optimal, but it makes sense from a hockey sense too.
Backstrom simply doesn't have the speed in transition to play the type of game that Ovechkin and Oshie like playing but is a very good offensive zone possession player. Meanwhile, despite Kuznetsov's fantastic individual efforts in transition recently Johansson and Williams aren't very good at that type of game and are better suited to a possession game.
I also don't think matching Ovechkin with the opposition's best line is particularly effective either. I'd like to see 90-19-14 be the shutdown possession line and 8-92-77 line against weaker opposition.