IMO Newhook is getting a little overanalyzed in terms of being a strong indicator of where the team is going, a sign of accelerating the rebuild, the future core being "finished", etc. I think that trade had more to do with having an obvious open spot in the top 6 for him TODAY for a development opportunity, plus our system already being pretty full with the kind of cutesy smallish high NHLe "steals" (Roy, Farrell, Ylonen, Roy, etc. plus Mesar as another small skill guy) that we might be targeting at those spots so they decided to go for a single more premium piece and skip the 3-4 year development gauntlet from draft year to NHLer.
I do think they're bullish on Newhook, but I don't really think Newhook is a guy they're absolutely locking in as a 100% CORE piece going forward in the same way as Dach was, and I think the price paid reflects that. They like his game and think he can take a jump on the wing, and if he becomes a top 6 playmaker but having too many small forwards becomes an issue down the line you can always just trade him, it's not like you won't get anything good for a 26 y/o top 6 playmaking winger if that's what he becomes but the fit isn't right. Same if he doesn't progress, a 25-26 y/o speedy 3C is still going to fetch a decent return (or could just be a good piece to keep).
I also don't think they're trying to "end" the rebuild or think it's done yet, we're still pretty clearly in a soft tank phase and outside of a fantasy scenario where everyone progresses hugely we're likely picking in the 6-12 range pre-lotto next year. 24-25 is probably their target to move up the standings but that's still going to hinge on development next year and how much bad money we can ship out too.