Quoting: YesThisIsFlo
I honestly think it would cost way way more. Way way WAY more.
This is a 22 year old, 6'4, smooth skating right handed defenseman who just scored 51 points. A guy who was the focal point of the Islanders offense and breakouts. He is going to be a top 5 RHD (the rarest position in the NHL) for over a decade.
He's about as valuable a commodity in the NHL as it gets. Realistically, there is a zero percent chance he gets traded, but I think it would be more like Miller, Rathbone, Podkolzin/Lekkerimaki, and next 1st, if not more.
Not arguing Dobson has value but, the offer you are talking about is insane. Compare what you're saying to what Jones got which was a more established player.
Miller - 99 point 1C
Rathbone - Currently a 3rd pairing guy but has top 4 upside.
Podkolzin - Currently a 3rd liner but, has top 6 power forward upside.
Lekkerimaki Hard to say but, has the potential to be a 1st line RW with 30+ goals if everything pans out.
1st which would probably be between 15-20 next year in a good draft.