A few obvious points:
1 - Barrie is 30 years old and signed for a few more years. Not exactly a fit in the scorched earth rebuild happening in the desert.
2 - Gostibehere is the current PP guy on the Coyotes. Younger, cheaper and outscoring Barrie despite not having McDavid and Draistl to pad his stats
3 - If Barrie is so valuable why is he in almost every Oiler proposal?
Barrie didn't have his stats padded by McDavid and Draisaitl except if your point is that they are the only two forwards we have and factor into 50% of our goals. Having zero offensive depth is not going to "pad" stats for anyone, especially a puck moving defenseman.
Note that Barrie was 8th in EV scoring among D last year. For the 73rd ranked cap hit. That IS good value.
I think your points on fit in AZ are entirely fair.
Barrie is not in every proposal, but the reason why he is frequently in proposals is that 1) we have about $500K in cap space, and 2) With the emergence of Bouchard, offense from our back end is one
relative strength that we could trade from to improve elsewhere.
In this case Chychrun is coming back at a similar cap hit and plays the same position, so it makes sense that we move Barrie, but that doesn't have to happen in the same deal.
I'd do McLeod, Samorukov and a 1st, or Broberg, Benson and a 1st. Can't do Holloway or Bourgault because we'll need to some near-term cheap talent to keep our team within the cap, so add picks or other prospects if you must.
I note... I think that Edmonton management is very high on Broberg, probably see him still having true #1 upside. I'm more of the mindset that he'll be Bouwmeester type, so elite #2 all-rounder. But we need solid contributions today, so I'm willing to trade that upside.