Bad Canada team was bad... make a Leaf the captain and they go out in the first round... .#jokes. They shouldn't have lost to Czechia though....
Outside of Celebrini, we just didn't have a lot of offensive talent, and he isn't Bedard level to carry a team. I liked Lamoureux's game as well, I think Arizona has a gem there, though his full game may take some time.
Minten played Minten's game. He's not ever going to be an offensive star, and normally he'd be a fourth line type of Team Canada player, leading your defensive line. This tournament doesn't really change my opinion of him... he'll be a 3C/4C at the NHL level... leaning towards 4C... a Kampf replacement, and that certainly has value.
Cowan played well, but played on a very selfish line, where the puck wasn't distributed a lot. Plus, he's an underager, and they don't normally shine, unless you are a star... He probably gets a chance to return to Team Canada Juniors next year.