The only place we dont have current nhl talent is at top 6 center, so unless youre saying you are only trading petterson for a current great top 6 center, then that means we do, in fact have the pieces.
The Wild absolutely have the pieces, if I said other I misspoke.
We would need the equivalent talent to Pettersson, age, contract/cap hit, and production included, as a center, and absolute can't miss winger (presuming we move Miller to center permanently) or top pairing RHD. I know Minnesota has two of those covered, but would Kaprizov(+probably, winger tax when paying for a center) or Spurgeon(+for the age difference) be made available? That's creating a big hole, even if it fills another.
Kaprizov and even Fiala, are great wingers, but they are less valuable to the Canucks considering we presently have Boeser, Miller, Hoglander, Podkolzin and Pearson fighting for four top six spots. Would either of the Wild forwards cut in to that line up? Absolutely, I'd argue either in the mix with, and even coming out on top against, Boeser and Miller. However either injecting into our line up pushes someone else qualified back, so it's not really a "need" for us. Miller going to center to accommodate one of the Wild's wingers would similarly only benefit us if one of them brought an element of their game we lack, and while I like both wingers mentioned, I think Pettersson isn't lacking enough of what the others bring to really value losing a home grown product.
Similarly on defense, we've revamped the line up and simply lack top end talent on the right side. OEL, who has been a God send, Hughes, who has picked up his defensive game, and Rathbone, who was sent down for reasons I hope are just ice time related, have our left side covered. Poolman has been fine, Myers, while certainly not a top flight RHD, has been playing like a wholly different player this year and would be fine in a top four role, and Hamonic just joined the big club. That's three top six RHD, so we'd need someone that is head and shoulders higher than who have.
Basically, in both cases, we need someone who's difference will equal (or improve) the loss for subtracting Pettersson from our roster. I've always thought of trades as trying to even out an algebraic equation.
Despite what we should have been doing, our ownership and management are presently making a playoff push, with Benning likely being canned if we don't make it this year, so a series of smaller pieces won't really appeal to us. Ditto to a "futures heavy" package. We have had a ton of suitable depth players that our coach is reluctant to play, instead opting for fringe NHLer's in key roles, leading to waiver losses and trades, so even "NHL quality" isn't really an appeal for an add on or part of a package either. Plus we have a lot of NHL level depth on the IR too...so that will be a mess when Petan and Dowling get used over Motte, Highmore, Sutter and Podkolzin.
I am not saying packages of lesser (not bonafide top line) players won't get a top center, but rather a package like that just doesn't fit what the Canucks need, or are looking for, unless Benning wants to set fire to the fields and salt the earth before being shown the door.