I'm not responding to all that at once. Stacking Guentzel with Kucherov isn't going to alleviate the even strength scoring problems of the other 3 lines. We had defensive issues because the other 3 lines both never sustained any pressure and the go to system was for the forwards to run a fly route back to the defensive zone unless Kucherov was on the ice.
This only works if Jake and Kucherov are split among 2 lines or you take Point off and pair him with Hagel and we try Cirelli with Jake and Kucherov. Otherwise you're running a TKO line redux and praying they don't get the kitchen sink thrown at them.
It's like you forget that Hagel also did 90% of his scoring 5v5 too. So adding Guentzel simply adds to our 5v5 scoring, whatever amount he is better than Stamkos. Which feels like a decent amount.