Now that I've had a few days to reflect on this trade, I'd like to offer a theory.
After trying to tweak this team into success by making the Saad trade, hiring Tortorella, and several other moves like trading Wiz, letting numerous bottom 6 FAs walk etc. Jarmo/JD decided this team was not built with the type of foundation that most often succeeds, building from the net out. Good Bob is a great start, but oft-injured Bob and the bad Bob we've seen, coupled with a barely adequate backup in McBackup need improvement. It looks like Forsberg and Korpisalo might develop into 1s or 1Bs. If that happens, check goalie off.
Obviously, the defense has been a major weakness. While either or both of Murray and Werenski could develop into a franchise defenseman, a#1 or at least top pair, adding Jones could be a big step in creating an exemplary defense. If at least one of these guys becomes a true #1, then check that one off as well.
Forward group: If the team is successfully built from the net out it becomes a bit easier for forwards to succeed.Teams with really good blue lines enter the offensive zone with speed which helps the forwards. The Jackets have a good top line winger in Saad, a really good#2 C in Dubie, good second line wings in Jenner and Atkinson with some help on the way at wing in Cleveland. Wennberg is already a solid #3 C who should continue to improve. What's really needed? An elite sniper and a #1 C. I believe the Jackets can likely get a sniper or a 1 C in this year's draft: Puljujarvi, Laine, McLeod, Nylander or though it's unlikely- Matthews.
I don't know, but since it usually takes defensemen and goaltenders much longer to develop than forwards, maybe this deal could be part of resetting the team, building a solid foundation and then adding centers as the rest mature?