What we need is cap space to finish the build, so that's independent of "changing the core group."
Yeah, but you need also targets for that cap space. Just having cap space is an asset, but it's an asset only if you can use it to your advantage. Usually teams use that cap space to UFA players or signing RFA players. I'd say that in last few off seasons there have been three UFAs I'd really wanted to sign Tavares, Pietrangelo and Brodie. I probably miss some and off course, if there isn't any prominent players you can argue if we should sign Taylor Hall, but in foresight if you want cap space then you should avoid those near good enough players.
If you want sign good RFA players you have to draft them or either trade for them. At the moment we are "reaping the benefits" of Hunters drafts, so there isn't that much to sign. It's rare to teams trade away their impact players and by those I mean young defenseman or centers. Dubas has gone UFA route in that sense adding Muzzin and Campbell from trades and some are still arguing if Muzzin trade was good for us. Columbus have had that center problem for ages and Kekalainen is one of the most active GMs trade wise in the NHL and can't seem to solve it.
Last season was our Columbus of 2018-2019 season, where we went all-in and I think rightly so. Expansion draft prevented us from adding player with term on deadline, so we lost lots of futures, but I think sometimes you have to push. We still have defense in place, that last season showed to us. We still have two bonafide centers in this league to build around. There isn't team that is preserving their cap space. Edmonton just signed Hyman and Nurse because those were two best players for them available. Stupid move from my point of view, but did they have lots of options? If they trade Nurse away their defense is terrible and those 1st and 2nds from draft are years away and McDavid is in his prime.
Cap space means nothing if you can't utilize it properly and I don't see us being in the Coyotes mode where we should take bad contracts for futures. After watching this UFA period it's clear that there was no benefit for trading Marner away. I see no options for us to get better trough that route. Next off season we can do that and then we have option to sign Rielly (hopefully that decision is made before season starts). It's pipe dream that we can trade Marner for NHL ready young up and coming (cheap) defense.
We have to draft those future RFAs in some point so I really hope that we don't go to that Foligno route anymore. We can't afford it, but otherwise we have to build around this core until there is option to make significant change by adding player like Pietrangelo, "Heiskanen", "Vasilevsky" or "McDavid". Though those are players other teams build around, like we build around Matthews and Marner. At the moment it's nature of this league, this isn't some fantasy GM. There are openings for players like Muzzin or Devin Toews, then you need that cap space but at the moment we don't have tradable futures for those trades. You have also 30 other competitors on trade market, so it isn't some 100% option to get those players when their available. This isn't old time NHL where GMs shuffle players like card decks.
In some sense we are bit entitled here, since we were pretty lucky that we got Nylander, Matthews and Marner from those drafts to build around. Instead of Reinharts and Dal Colles. Our worst screw up was having bad drafting in later rounds in those drafts, which have meant using futures for adding to our core. Which hopefully changes since we have Liljegren, Sandin and Robertson coming up.
Lou had option to pile up some assets from Bozak, JVR, Gardiner etc. But it is hindsight to go to that route and I think most of us supported those own rentals, so I don't go there.