I think Kadri is here until his current contract is up, then goes elsewhere, and maybe he's someone that we can develop a system replacement for to make him redundant by then so we can deal him for futures to restock. Good asset management could keep this contender going for a while if we draft & develop well
Brown and Hyman I have a hard time seeing here beyond their next raise, unless Brown really breaks out. But I think with all the NHL ready forward prospects that we have, these guys could both be dealt for futures without hurting the on ice product to help sustain the contender - or maybe one is used as the core piece of a trade that brings back an NHL ready RHD with a decent upside, like a Rasmus Andersson kind of thing. The needs are really isolated on the big club, and we have a good stock of non-roster assets and/or surplus roster assets so our buying position is really good if the right guy becomes available
on the Zaitsev contract, I think we could get whiplash with how fast the perception of that contract will change if he has a good year. If he's a #3, that contract is a steal next year let alone after 5 more years of inflation. I don't think he's a core player, but could become a value contract quickly that we want to keep because of the cap. If Liljegren becomes a top pairing RD, Rielly-Liljegren/Dermott-Zaitsev looks like a pretty good top 4 and more than passable on a team with this offense
I see the core in generations coinciding with contract term completions:
1st generation (3-4 years) - Kadri and maybe Andersen depending on what we have to replace him & his health/performance
2nd generation (7 years) - Tavares
3rd Generation (probably 2 contracts, 10-15 years) - Matthews, Marner, Nylander, Rielly