I could see this being a fairly experimental roster, at least more that Canada typically would do. A few fallow drafts have left things more open. For example, likely in the 2022 Olympic tournament you would have seen some combination of Couturier/O'Reilly/Stone/Bergeron taking on defensive responsibilities, but health/age/retirement rule those guys out, maybe an outside chance to O'Reilly. Could see Reinhart getting that kind of role as he's at least solid defensively. One guy that I think has a really good chance of getting a complementary winger role is Konecny (Marchand Crosby Konecny?) if he's healthy.
I also think that there are spots available for guys like Lafreniere, Byfield, McTavish, Johnston if they start the next season well. In particular Canada is going to want some size and the first three can help there. You'd like more international/playoff experience perhaps but can't have it all. I also thin it's safe to assume that Bedard makes the team. He'll be a winger, but I don't know where he'll fit. If Point is a centre that could be a decent fit since McDavid and MacKinnon aren't realistically going to cover for him. There are a lot of different ways the forwards could go. Thomas is good but might not make it at centre, Barzal has shown positional versatility but Canada probably has better playmakers so I'm not sure he can contribute all that much. Cozens is also a strong contender to me given his versatile game, but Canada is pretty strong on the right side so who knows.
Outside of Makar I suspect that the defence is pretty open. Morrissey will likely be there. Theodore if he's healthy, probably at least one vet like Doughty or Pietrangelo. It's not a great group beyond Makar.
Binnington will probably be one of the goaltenders but needless to say there will likely be open competition and guys who play well could take a spot.