The problem with that theory is the goal is to win cups, not collect superstars like it's some kind of shitty marvel movie. If the opposite were true, a team like Toronto would have multiple cups with their core of overpaid superstars and a player like Karlsson would've been dealt for more than a collection of cap dumps.
If Colorado is out on Rantanen, trade him to the highest bidder and use those assets to get players that can actually help you win a cup. Players who outperform their cap hits, like Miller, Bennett, Konecny, Wilson, Guentzal.. you get the point. Colorado is a smart organization that's won a cup recently, I trust that they understand this.
Nothing EP's done in his career indicates he'll ever be worth his cap hit in the playoffs, and getting out of that contract for anything with positive value would be a huge win for Vancouver. Even if its a few months of Rantanen
Vancouver will almost certainly have to take back a cap dump in an EP deal. I'd bet on Cozens being another in a long line of players to figure it out immediately upon leaving Buffalo over a lot of other cap dumps Vancouver might get.
Unfortunately for the Canucks they've painted themselves into a corner with EP's shitty cap hit and incoming NMC. I said it at the time, they should've taken that Hurricanes offer last year and added Guentzal too.