NJ foolishly reaching for him at 2nd overall shouldn't impact his trade value 3 years later. Nemec hasn't done anything in the NHL or AHL so far to suggest he has a higher ceiling than a 25 minute per night 70 point defenseman. He's an offenseman being outscored by the younger Luca Cagnoni in the same league.
I highly doubt Zetterlund on an expiring contract has the trade value of a 1st, 2nd and 3rd but let's assume he does and assume Ferraro's trade value is roughly a 2nd and maybe a Thompson-level defense prospect. So the trade
@vortexy proposed would come out to two late 1sts and two late 2nds in a bad draft, a 3rd and Thompson for Dobson. It seems like a no-brainer to swap those assets for Dobson no matter where your team is in the competitive cycle as long as he's willing to sign a long term extension.