Marner shouldn't have to carry a line with JT at the expense of attenuating the output of Matthews. Marner, Matthews and Bert have the ability of being the best line in hockey. Jt has enough to do an adequate job on a third line. It makes zero sense to have that much firepower on the third. The third becomes the second and then you find Willys minutes cut. That move gives more.minutes to JT and less to Willy.
It's all about the philosophy of balance and depth and how much you value it over an 82 game schedule preparing for the playoffs.
If we consider that we have six top six forwards and they are:
Matthews
Marner
Nylander
Tavares
Bertuzzi
Domi
Knies
We can either stack two lines and then have 3rd and 4th lines that may lack offensive power or any identity or defined purpose. What would your bottom two lines be in the guys listed above would be the top two? How much ice time would you give the bottom six at even strength?
My personal opinion is that I would like to see those top six spread in pairs across three lines and joined by some of Jarnkrok, Robertson, Lafferty, and Holmberg.
I would want these top 3 lines to play 42 to 44 of the 48 or so ES minutes we have in a game. This approach has us with top players on for 90% + of ES time. We will win a lot of matchups while also load managing.
I value this more than being able to say we have the top line in hockey.
We also get to shelter a third line of Kampf, Reaves and Gregor. 4 to 6 minutes of ES time. Kampf and Gregor getting 4 or 5 minutes of PK.