Timing is key. You want to talk about the Blackhawks? Look at how they kept the core of the team together after two 1st round exits in a row with a completely healthy roster...something DB has never done.
There is replacing parts that don't work, and there is having enough dedication in your core pieces to stick with them through some rough patches. Fleury is the only piece who management has shown an excessive amount of patience with, based on the hard numbers.
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You see, changing core pieces isn't always the answer. Sometimes you have to find the right complements.
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For the record, it's the latter. We have the potential to do better - all the pieces are there for another Cup. But it is a capped league with several other very good teams, and it's not reasonable to expect the Cup every year. Or every second year. The prudent thing to do is tweak a team with as many positives as the Pens, not blow it to smithereens if we don't make the Finals for a few injury-riddled years.
Common theme here for me, and my issue with Shero's off-season, is this concept of "keeping the core together". If we were talking about Shero's stubborn patience with his core group, I'd be on board. My issue with Shero is his patience extends to the complimentary pieces.
Not being trigger happy on a deal to dump a core player like a Crosby, Malkin, Neal, Letang, etc. is fine. I wouldn't want him to go full Holmgren in that regard. However, his love affair for keeping around guys like Adams, Glass, Dupuis, Fleury, etc., and continually sticking with vets like Eaton, is my issue with him. He seems incapable of shaking up the team, period, not just the core.
IMO, the successful teams are the ones who keep their talented core in place, but who properly tweak their complimentary pieces when things aren't working. They move players like Dupuis out so that they can bring in (or in this case, simply try and in-house prospect like Bennett) someone to play that spot. They move out fringe players like Adams or Glass and either find a "hungrier" replacement in free agency, or look to another in-house replacement in the system.
Look at the Blackhawks' two Cup winning teams. The core players (Kane, Toews, Keith, Sharp, Seabrook) all remain, but a lot of the complimentary pieces have been changed. Heck, Niemi won them a Cup, but that didn't stop the Blackhawks from trying to upgrade that position. Meanwhile, Fleury's entrenched in a Pens uniform no matter how bad his playoff performances are.
So I really don't mind Shero's patience when it comes to the core of the team. Where I'm starting to get annoyed with him is his patience for even complimentary pieces that could be upgraded, but instead are kept around because they're familiar.