I have to agree with this. People need to look beyond a simple hockey transaction -- management will be looking at it from a more holistic perspective. They'll have pressure to win (sooner rather than later given recent performances); to get people into the stands; and to provide an entertaining product (all of which are linked). Overall their goal is to make money.
Kessel makes them better and he's entertaining. So even if you're not better and aren't winning, you're at least entertaining people and scoring. Last year only Buffalo, NJ, and Arizona scored less than Carolina. And their GA was actually pretty reasonable and a hell of a lot better than ours. So it's conceivable that they believe they may be a much better team that their record this year indicates.
I think short of giving up our 4OA pick, Nylander, and Rielly, if there is a deal to be done with Carolina we should do it. Our problem has always been top-end talent. It's easy enough to swap out all the other pieces and flip them around but when your top-end players aren't good enough you don't win. Look at Chicago, that team has been altered and changed so many times with the main 4-5 guys remaining the same. Because those guys are good, they continue to win.
If we have to give up some of our lesser assets (i.e. Kadri or Kessel) to get a chance at premier talent (Hanifin, Marner, Provorov, etc.) then you can't pass that opportunity up.