I'd probably try to go with something like:
Lafreniere - Veleno - Thomas
Byfield - McMichael - Lavoie
Newhook - Krebs - Cozens
Foote - Groulx - Dellandrea
*Foudy
Smith - Docker
Byram - Harley
McIsaac - Drysdale
Thinking being:
1st: load up skilled wingers around Veleno who should be able to hold his own there and give them some freedom to run, 'cause they're gonna be leaned on offensively.
2nd: stick McMichael between a pair of offensive players that he'll more than keep up with, but can maybe help cover for some lapses.
3rd: never a guarantee you can just rekindle chemistry, but i liked that trio at the U18s last year and it makes sense as a responsible "checking line" with offensive upside.
4th: the sort of "energy line" Canada likes to take players for, but without that "defensive plug" they sometimes decide to take. Some size, some speed and relentless hustle, and a center who can generate some chances and hopefully pull it all together.
Spare: Foudy makes sense to me as that "Swiss Army Knife" spare. Not really exciting, but easy enough to see him plugging in pretty much anywhere and contributing some energy in limited minutes.
I think that gives you plenty of options on the PP, and at least enough PK options up front to keep from leaning too hard on anyone in particular.
1stD: Smith is a HC fav for good reason, and Docker comes with a maturity and experience that i think makes for your top/shutdown pairing.
2ndD: Probably a risk putting two catalysts like that together, but you probably want the "babysitter" with the draft eligible, so hopefully it works.
3rdD: I think you have to take Drysdale, he's just too good not to. But at evens, you're gonna want that "babysitter" like McIsaac for a draft-eligible Dman.
Spare: I don't really feel great about any of them tbh. I'd say probably Bahl, who has some versatility and size...but ehhh, i could take it or leave it compared to Diliberatore. I don't love taking Addison, because i've never liked taking that "offensive-oriented" spare. It just doesn't work out. Prefer more of a "steady defensive" type who can maybe chip in a bit with some PK minutes, and just quietly slide in if they have to step into the Top-6. Already a ton of skill in the rest of the d-corps.