I've thought about this Duchene situation a lot and I'll try to make good sense on why we should trade for him, Glenn has already covered me pretty well.
Why it makes sense for us:
1. Expansion draft
Our expansion draft plans are vague right now, and trading one of our top-4 D would solidify the plans. We'd go the 7-3-1 route and get to protect Jarnkrok and Wilson which we can't do if we go 8-1. We'd lose Smith to LV and that would be huge for us to get out of that contract.
2. Irwin-Ellis pair
Lavy has put together Irwin-Ellis pair, and I don't think it's no coincidence. They've played against top competition because, I think, Poile wanted to see if their capable to hold their own. So far, they've looked as good as any our 2nd pair this year. They'd make a solid pairing going forward.
3. The things Duchene brings to the table
Faceoffs. The number two man in the league at the dot. Needless to say, that's important. One of the big reasons we've found success lately is that we have completely owned the dot.
3 on 3 play. We've pretty much sucked at it so far so Duchene would bring us a lot of help there and a couple of more points per season.
Leadership. Duchene is not some kid who doesn't care and doesn't know how to behave. He carries himself very well, plays the game passionately and provides leadership. The guy has been an assitant captain almost everywhere he's been in his career.
4. Duchene loves The Music City
The guy has openly said that he loves Nashville and he's a "wannabe country singer". Is there a more perfect player for the city and the team? He's a UFA in 2019, but I don't think there's a chance he wouldn't sign with us. We have a contending team here for years to come and he's a young player who fits the time window perfectly.
5. Neal extension, Kamenev coming up?
James Neal's contract is ending in 2018, and if we hope to sign him we have to have a contending team. I'm not saying we don't have as of now but our center situation is questionable. Neal is nearing 30 and has a 4-5 good years in him. We have to take an advantage of that. Kamenev is the choice for #2C here but he might not be ready for next year. Maybe going forward yes, and if Duchene doesn't somehow sign with us it's an softer fall as we have Kamenev coming for the #2C. Still, Joey-Duchene-Kamenev is a SC winning 1-2-3 punch down the middle.
6. Copying the winners
Recent history has shown that the one important key to winning the SC is a strong center core. We have decent centers, Fisher and Jarny are okay, but they aren't enough to go all the way. Johansen-Duchene combo down the middle is a SC-winning combo.
7. Top-6 defenseman are easy to find
If we feel that Irwin, Bitetto or Weber don't belong to the top-6 defense, we can always go out and acquire a d-man. They come relatively cheap, and in the summer we could surely find a vet top-6 d-man.
8. Our defense prospect pool could absorb the hit
We have a deep prospect pool defense-wise with Fabbro, Girard, Carrier, Dougherty and Allard in the pipeline. Losing one of them wouldn't be the end of the world, when given the Preds' ability to find good d-men. On the other hand, Poile has to hold on for Fiala and Kamenev as they are our only good forward prospects and vital going forward.
Why it, on the other hand, doesn't make sense for us:
1. Josi's head, Subban's back?
Our top 2 defensemen have struggled with injuries lately and should one of them suffer a long-term or career-ending injury we'd fall off to nothing. So we'd relying on two players' questionable health and that would be a concern if we make this deal.
2. Do we want to blow it up, again?
As Poile has stated, he doesn't want to make a habit out of trading our top-4 defensemen. The team is starting to gel defensively, and it's starting to show on the ice. Chemistry would take a big hit again in the defense should we trade one of the top-4 D. Although, there isn't any d-man coming back so the same players would just get more ice-time.
All-in-all, I think the time for us is now, Rinne's good years are running out, Saros is of course coming off strong but still I'd rely on Rinne more when the time is. He was good in the last year's playoffs.
Poile, the time for us is now. Make the move.