Agree but this seems to be an unpopular opinion right now.
Trocheck the player is fine but not at 7 years. That's my concern, how quickly does this contract become ugly? Looking at what they had to give away just to move Nemeth, what would it take to move Trocheck? There's no history or guarantee he has any kind of chemistry with Panarin, he plays a completely different kind of game, so it's a big gamble.
I was listening to SiriusXM NHL radio today and they shared the same concerns about Trocheck.
Many such cases of a cap dump are typically not centers. I am not an authority on this but if we go through some recent history on buyouts and cap dump trades. Shattenkirk, Staal, Girardi, Nemeth, Lundqvist, Smith was in that territory if we were competing. The Devils with Cory Schneider. The took on a cap dump in PK Subban. Islanders have no one recently but they took on Parise who was bought out with Suter, wing and D. Flyers dumped Ghostisbehere to ARI, they were needing to dump JVR (wing) just a few days ago. Toronto just shipped out Mrazek as a dump and took on Murray who is also a dump. Notable one from OTT is Bobby Ryan (LW/RW). A dump exchange of Neal/Lucic, both wings. Let's not forget Islanders dump Andrew Ladd, LW. Canucks big dump Loui Eriksson, LW. They took on what Arizona considers a dump (mostly $$$ less cap) in OEL. Tampa just pseudo dumped McDonagh. Panthers have 2 deadcap on their roster right now (didn't even know until I checked) in Yandle and Darling. All the chaos in Vegas, Fleury chased out for nothing, Pacioretty, Tatar wing wing. Only C that was dumped was Marleau who was old, unwilling to play for anyone other than the Sharks.
My longwinded point is, centers that are productive are always in need and never seems to require drastic measures whether that's buyouts or attaching assets to move. A Stepan that Gorton thought was about to run out of juice netted us the 7th overall pick roughly. Vinny will be 35 to start his final season and will finish the season at 35. He won't be a corpse barring injuries that put him into LTIR territory. If there's a position where you'd be okay with taking the risk of a long term contract, it's a productive center. $5.625 in 5 years is going to be the equivalent of $4.5M today. The price to dump is astronomical right now because of the flat cap. The prices will be half off in 4 years to dump if it comes to it. I'm not sweating it.