I'll tell you what, even if JT can be signed, for that haul from Arizona, I would be very tempted to take Keller, Chychrun, Crouse and their first rounder, which I assume would be middle of the pack at best and could be a lottery pick.
I am a BIG fan of Keller and Chychrun. I advocated hard last year to move up a few spots for Chychrun (or Kunin) or to go all in and try to get up even further for a Jost, Keller or top defender. Even if it took two firsts+ to move from #19 to the #7-10 range.
I would love to see Keller paired with Bellows and maybe Ho-Sang in a year or so to form a young, talented and loaded line. Their skills would compliment each other spectacularly. With Keller a playmaker and scorer, Ho-Sang's playmaking and skating plus Bellows shot and tenacity.
As long as Chychrun's knee injury isn't career threatening, he is a fantastic foundation piece for the defense. I could see him and Pulock meshing very well as the second pairing behind Leddy and either Boychuk or perhaps Pelech. If Pelech meshes well with Leddy, then maybe Boychuk plays with Toews. A bit less minutes might help keep Boychuk healthy. And that defense is dirt cheap, beyond Leddy and Boychuk, with Chychrun, Pulock, Toews, Pelech and presumably some mix of Mayfield, Salo or the AHL kids bringing depth and numbers. Losing CdH wouldn't be so bad. And maybe CdH is traded for a player or premium draft pick.
Crouse, maybe he is on the third line at either RW or LW, and centered by Beauvillier with either MDC or Bailey on the other side. It would depend on the strides MDC makes over the coming season and if Bailey is extended.
The fourth line of Bailey, Cizikas and Clutter is solid and versatile. Bailey can essentially play anywhere.
The first line is presumably Lee, Barzal and Eberle.
Obviously the top-3 centers lack experience and are a bit undersized. But with the Isles first rounder, Calgary's two picks and Arizona's first in a deep draft, plus anything from trading CdH, they could probably put together a package to add a vet center to hold down the #1 spot. That could shift someone like Beauvillier, Keller or maybe even Barzal to wing until they grow into the role. Duchene, maybe? With Cizikas also getting some more responsibility.
And the Isles would still probably have picks and prospects in the pipeline to keep adding. But I can't see Arizona doing that unless JT agrees to an extension and that is extremely unlikely.
But get me a package like that, with 3-4 premium assets that fit in with the timeline for Barzal, Ho-Sang, Beauvillier, Bellows, MDC, Pulock, Toews, Soderstrom, Sorokin and the rest of the kids, and I would be able to live with JT and CdH leaving.