I'll name them you won't agree so it's pointless.
Muzzin wasn't great last year in tough defensive matchups. Him and holls possession stats dropped when moving to the hardest competition for defense pairs
He also isn't an offensive d-men. He can make a solid zone pass but their are several more dynamic 5v5 offensive d-men on team Canada including Letang, Makar, and Theodore who have better natural puck moving abilities. 2 of those 3 guys didn't have as many high quality offensively capable wingers/centers as Muzzin had.
He's also not a great skater, and has been caught flat footed several times in his tenure with the leafs. Team canada has a series of capable high speed defenders they can rely on to not be at risk of being burned on a bad/offensive read like Muzzin would.
Team Canada has a younger and better Jake Muzzim who if healthy will be a tier above Jake. His name is Aaron Ekblad
Team canada should go with
Makar, Letang, Hamilton, Theodore, Rielly, Ekblad, Pietrangelo, Doughty
As their 8D with Rielly and Doughty on the outside unless they have big seasons leading up to the Olympics
Rielly could be replaced by a PP specialist who could be brought in should some of the main guys struggle