The biggest praise, however, was given to MacKinnon, the 24-year-old who had 99 points (41 goals, 58 assists) in the regular season and 13 points (six goals, seven assists) in 12 postseason games.
"You could see in the playoffs how he took his game to another level," said Pittsburgh Penguins center Sidney Crosby, a close friend of MacKinnon. "The way he dominated, only a few that come to mind. I think of (Edmonton Oilers center Connor) McDavid, (Penguins center Evgeni Malkin), Nate's in that category where he can just take over a game.
"I think we saw a pretty good glimpse of that in the playoffs. He did that consistently. I'm sure that was great for him to see that and feel that out there. And I expect him to take another big step here. It's a pretty solid team. I think he's going to be a pretty solid part of that."
Klingberg, when asked who the top scorer in the NHL will be this season, immediately guessed MacKinnon.
"You saw last year how he took off and obviously with the line they have there with Landeskog and Rantanen, it's probably one of the best in the League," Klingberg said. "A guy like that, he drives to play every shift and it looks like he's going to get better. I think he's an unbelievable player."
The Avalanche added depth this offseason by acquiring forward Nazem Kadri from the Toronto Maple Leafs in a trade for defenseman Tyson Barrie and forward Alex Kerfoot on July 1. Colorado also acquired forward Andre Burakovsky from the Washington Capitals in a trade for two draft picks on June 28.
Blues center Ryan O'Reilly, voted the winner of the Conn Smythe Trophy as MVP of the 2019 playoffs after St. Louis won the Cup for the first time in its history, said he's also keeping an eye on the Avalanche.
"I'm interested to see how Colorado does, with them getting younger and stuff like that and having some pieces," said O'Reilly, who played six seasons with the Avalanche (2009-15). "And it's always tough going against Nathan MacKinnon. If you let him loose a bit, he can be tough."
The Avalanche aren't the only Central team that made offseason upgrades. The Stars signed longtime San Jose Sharks forward Joe Pavelski to a three-year contract and former Anaheim Ducks forward Corey Perry to a one-year contract. The Blackhawks signed goaltender Robin Lehner, a finalist for the Vezina Trophy as the best goalie in the NHL with the New York Islanders last season, to a one-year contract. Chicago also acquired defenseman Calvin de Haan in a trade from the Carolina Hurricanes and forward Andrew Shaw in a trade from the Montreal Canadiens. The Minnesota Wild signed forward Mats Zuccarello to a five-year contract.