This is a revisionist argument, you only see many of these teams as having all their holes filled because they went on to have success. If we go on to have success with our current roster, suddenly we'll also have all our holes filled except the coach. Either way, it's just a misdirection, the point is teams that went on to win did so with coaches that were not established
Colorado didn't draft Makar until after they hired Bednar. We have Brady, Stützle, Sanderson.
Kucherov was an unknown when Cooper was hired, he didn't break out until 5 seasons after Cooper was hired
Babcock had two seasons as a head coach, one year where he rode a hot goalie to the finals and another where he missed the playoff.
Two years is established now? I don't think you're being logically consistent here. Green took over a terrible team and brought them on a playoff run nobody expected, beating the defending cup champs stl blues and then took the VGK to 7 games, he has more than double the experience Laviolette had.
Bednar came to a team where MacKinnon had 3 seasons under his belt, Rantanan had 9 games, Makar wasn't drafted and their captain had 5 years experience with only 7 playoff games, they were not some established team.,
The team Cooper took over and the team he was coaching three years later were completely different, Stamkos and Hedman were still there sure, but gone was Lecavalier, StLouis, Salo, Purcell, ect.
What? Bednar had zero track record Colorado, Cooper had zero track record before tbl, Bylsma had zero track record before Pittsburgh.
Green took over a bad roster, with some of the league's worst management of course he isn't going to have immediate success. It wouldn't matter if Scotty Bowman took over, you can't make chicken salad out of chicken shit. That's why a highly experienced and established Bruce Boudreau had no sustained success when he took over.