I think there's a misconception of what this team is actually bad at.
You can throw whatever intangible you like at it; what they need to improve is very tangible. They don't produce enough at even strength.
Personally, I think Vatrano is a player who looks like he's hustling because he's ten steps behind the play all the time, but let's give him the benefit of the doubt and say he hustles. Hustle isn't what we need. He's not good at 5v5 offense. He exists and scores 20 goals. That's the nicest thing you can say. That's Alexis Lafreniere. We have it already.
Whatever things and stuff you think Panarin does bad, and there are a few of them, he's one of two forwards on this team who's decent at both driving play and scoring 5v5. The team would get demonstrably worse without him, changing nothing else, bad habits and all.
It's ok to mad at Panarin for having to play the Devils basically without him, but that's what the team looks like without him.
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I'd be very happy to add a "soft" player like this over the Motte's, Vatrano's, Acciari's, or whoever else in the collection of players who look like they're doing something when they're not.
That's what the lizard part of your brain is doing. You want guys who look like they're doing something when we're getting outplayed, instead of correcting that we're getting outplayed.