Totally.
Mr. Magoo could take a team to the final and game 7 of the ECF in consecutive years.
If you go and look at articles of Vigneault's demise and firing with the Canucks you'll see two prevalent themes.
1) Gillis to blame for the roster construction
2) "Aging Squad" led to decline in play of Canucks
Nash, Girardi, Boyle, Yandle, Moore, Stoll, Staal, Henrik, Klein, Stalberg... The youngest of these guys is turning 29 on January 13. By next season, all but 1 will be at least 30. By mid next January the youngest will be 30.
Will a GM's roster construct lead to another firing of Vigneault in the next 2-3 years? You don't think that Vigneault had massive input and influence over resigning of G, Staal, acquiring of Yandle, Stoll... etc. And all the moves made by Gillis back in his time w/ Vancouver?
Perhaps Vigneault's main fault is his loyalty to veteran players, at which point a mitigating factor would be a GM that works to acquire potential fits for his system while keeping the team young and hungry.
I like his system. I haven't turned on it. And I think it can be successful given proper execution. But his loyalty to players that tend to be regressing, his inability to make in game adjustments, and his game to game line up decisions... they leave more to be desired.