It looks like Quinn Hughes is out a while. I hope he can make it back for the tournament!
Losing Matthews and potentially Quinn Hughes would be extremely disappointing.
Luckily there's a third Hughes waiting in the wings. He's certainly not Quinn at this point (especially offensively), but he brings that Hughes brain and elite skating that would be an asset in a best on best.
So Eichel gets upgraded to #1C and I'd still keep Hughes on the wing. I'm assuming Thompson is added to the team as Matthews' replacement.
I don't understand the big push to have Jack on the wing. He's one of the best centers in the NHL with dominant underlying numbers. If there's concerns about faceoffs there are a handful of strong faceoff wingers available. His speed through the middle of the ice is extremely valuable.
I'd put him with Thompson and probably Miller or Brady. Jack excels at driving the middle of the ice and bumping it out for open shots from the perimeter, where Thompson could thrive.
Guentzel - Eichel - M Tkachuk
B Tkachuk - Hughes - Thompson
Miller - Larkin - Boldy
Connor - Nelson - Trocheck
Kreider
That gives us two dangerous scoring lines and a rock solid checking line. Neither Guentzel and Matthew are great puck carriers, but they are great give and go players, so it makes sense to put them on a line with Eichel.
I'd limit the minutes of the 4th line and do my best to roll 3 in such a short tournament. Connor is not a great 5v5 player, but he could be useful on the PP.