The offensive contributions of Domi and Robertson might be too limited in a fourth line role (although the TOI between the two lines could be made to be fairly close). I'd probably opt for:
Robertson-Domi-Jarnkrok
Gregor/McMann-Kampf-Holmberg
Unfortunately, injuries...
Outside of Jarnkrok, all those player ice times are fairly close anyways. Nothing really changes outside of linemates and line usage. Third line is more defensive and puts everyone’s strengths together. Fourth line has two shooters with a pure playmaker in between them hopefully causing mismatches given their offensive skill set and skating ability compared to other fourth lines.
Knies - Matthews - Marner
Bertuzzi - Tavares - Nylander
Jarnkrok - Kampf - Holmberg
Robertson - Domi - McMann
I think that would be our best forward line combinations.
Need to focus on improving the blueline. I’d target Samuelsson.