I think Zucc potentially gets you a pick in the early 20s and a solid, though not spectacular prospect. Though I don't know if the pick is in 2018.
I'm also one of those people who would not rule out the team moving one of either Kreider or Hayes.
I'm in agreement with McKenzie, I think this team has two or three potential deals immediately on the table once they're open to negotiate again.
Let's say they do trade Zucc for 20, that is a pre draft ranked prospect that is like 4th or 5th tier.
Now let's keep going with that line of thinking, if it's Hayes or Kreider or pretty much anyone they are not likely getting top 3, maybe not even top 5 or 6.
So what is the overall level of team they would be building? Without them really hitting on picks who burst through and develop far above their pre draft rankings, are they still not going to be ending up with the usually stuff teams get from those 3rd tier picks, which may include guys like Hayes/Kreider but also guys who bust?
I do not fear them not competing, I fear they are building something that can compete just fine in the regular season, maybe even win a round or two eventually but not something that is going to match-up well against the future Tampa, Pitt, Kings, whoever that may be who has those top tier guys plus many 2nd/3rd tier guys.
Rebuilding without getting those top picks is going to come down to scouting, management and luck. If any of that is off even a little I think the team ends up with the same level of players it traded away, maybe not even that.
I like them rebuilding as I feel they needed to, but I liked it a lot better when top picks were somewhat likely, them drafting 8th-10th and adding some later 1sts and whatnot is good for their depth, maybe even good for their 2nd line or 2nd pair, they may get lucky there, but I am concerned about the top line and top pair being garnered through the draft if things shake out as one should normally expect from those draft spots.
None of that has to do with Kovalchuk, but in a way adding him is going to make even more likely they are not at the top of the draft next year either, and then same as this draft, if they are even a lottery team then it's all back to if everything comes up Milhouse or if they get the Dud.