if philly sold they'd do really well
I'm not entirely sure about that, because they've severely damaged or degraded much of what they have to sell.
In Provorov's case, he's been disgruntled and they've held onto him for too long, so he's put out quite a bit of half-assed play that doesn't exactly bolster his value. Not sure how his Pride incident earlier in the year plays for GMs in certain markets, but I don't think the added attention he brought upon himself is a positive in the NO DISTRACTIONS league.
Similar with Hayes, who just blatantly plays like it's a chore. He was already overpaid, but I don't think an NHL scout who saw him at any point after January this season would have anything nice to say. Not only was he bad, Tortorella moved him to wing and buried him on the 3rd line, which hurts your ability to sell him as a center in a weak center market.
Couturier and Atkinson, just straight up medical incompetence led to lost seasons and turned them into total question marks. Not to mention Couturier is signed for like 7 more years after this.
Sanheim they signed to an 8-year, expensive extension and then preceded to run hm out there with nightmare partners like Ristolainen and DeAngelo all season. He seemed to struggle to understand what Tortorella wanted from him (happens to a lot of guys) and Torts even health scratched him out of a hometown game with his family in attendance. His confidence is pretty torn up and he just played an entire season well below his ability before that huge extension even kicked in. Not ideal.
Hart, good goalie on a crappy team, the numbers suffer.
Konecny is worth a lot. Laughton is a warrior and a heart-and-soul guy and a PKer and every cliche that hockey coaches and GMs love, so he has some value too.
One guy I don't see much trade discussion around? Farabee. Again, back surgery, crappy season, called out by Torts—but quite young, quite talented, decent contract if he bounces back.
TL;DR incompetent organization and asshole coach diminish player value.