I liked Laine as a Jet, and will never dislike him. I just won't be paying any attention to him now. Same as any Jet that leaves.
Dubois has improved the team, and it's not the fault of Laine, Wheeler, Scheifele, Maurice, or anybody else. He's just improved the team. Full stop. From what I hear, the locker room is a happier place, too, but like everyone else, I don't know anything about the locker room for sure.
We also know that Wheeler was playing the first part of the season with a nagging injury that slowed him down considerably, which is why he was "only" averaging a point per game. The last week and a half he's been brilliant. He set up Connor (I think) with a blind pass for a goal the other night against Vancouver that was stunning. In the last three years he leads the NHL in primary assists (220+).
Is Wheeler making more money than you'd like to pay a 34 year old? Of course! Was Wheeler vastly underpaid for the previous six seasons? Absolutely!
That's one of the things about the way professional sports works. The best players always end up making the most money in their later years, making up for being underpaid while at their peak. It's a necessary evil, though, because when you talk about teams that nobody wants to play for, underpaying your top players is high on the list of reasons to stay away. Every good team has overpaid veterans. And good for them...it's not like Wheelers isn't still a valuable player for the Jets.