6 or 7 years? How good do you think Nylander is going to be then? He's 29 now, and who else, Knies?
It's a bit weird to emphasize how important Matthews is, then say the window of being good exceeds his contract by 3 or 4 years. Even if Matthews re-signs, that group of 3 is going to need a lot of help to be cup competitive.
I think that's quite a ways off... and they've got three years to figure it out.
Also, while I'm not in the trade Matthews camp and do feel disappointed by how some fans feel towards him, at this point, though, it's not without reason, and you can even say that it's "silly emotional thinking" that they will actually change based on what we've seen now for at least 8 seasons.
The other issue to consider is: a 28-year-old Matthews is more valuable than a 31-year-old Matthews. So, if we establish that he can't emotionally or statistically drive this team, or they reach a point where they can't surround him with the necessary talent to help him (both equally important), then trading him is not an illogical step.
Lastly, I think it gets forgotten that half of the division went into decline during our rebuild. Florida was mediocre, Buffalo was bad, and Detroit and Ottawa followed shortly after... even Montreal has tanked in the Matthews era.
They have had some breaks that have made the ascension seem more seamless than perhaps it should've been,