Hear me out with this scenario...
Admittedly, for this hypothetical trade to go through, the stars will have to perfectly align. Poile will have to have a strong indication that Duchene will sign in Nashville, thereby invoking the need to immediately re-allocate Subban's $9M salary. Additionally, since the Preds would then be rolling with Duchene/Johansen/Turris at center, Bonino would become a trade candidate, presenting another opportunity for cap relief. (Personally, I think Ottawa makes the most sense for Bonino, since they need to reach the cap floor, and are short on both veterans and centers. Bonino checks a lot of boxes there.)
If all of the above comes to pass, would you guys be open to LW/RW Miles Wood + 2020 top-5 protected 1st + NSH 2019 2nd for Subban?
Wood is an incredibly versatile forward that would be a seamless fit in Nashville. He has speed to burn (I'd argue he has top-5 straight-line speed in the league), and plays a fearless "bull in a china shop" style that perfectly matches the "Smashville" mantra. He played almost exclusively LW last year, but is fully capable of playing RW (his hat trick in 17-18 actually came on the right side). Frankly, I think he's the player you thought you were acquiring (or wanted to acquire) when you traded for Wayne Simmonds at the deadline... except Wood is 23 and is signed for 3 more years at $2.75M AAV. He has sniffed 20 goals before (19G in 17-18, playing ~12 minutes a night); I could see him breaking out in Nashville, especially if he's given PP time at the front of the net.
The picks may be used to either draft to supplement your lineup with cheap ELCs, or used as trade currency at the deadline. If Poile goes into the 2020 deadline with two 1st's (very unlikely and unusual situation for a contender), Nashville is automatically a part of the conversation for the highest-profile rentals on the market. Even if no additions are made (highly unlikely), you're rolling with:
Forsberg - Duchene - Arvidsson
Tolvanen - Johansen - Granlund
Wood/Jarnkrok - Turris - Smith/Watson
Jarnkrok/Wood - Gaudreau - Watson/Smith
Josi - Ellis
Ekholm - Fabbro
Hamhuis - Weber/Irwin
Again, a lot has to go right for this trade to even be feasible. But, hypothetically, what say you?