What I took from what Devellano said, there may be offer sheets in the future
If they reduce the compensation in CBA negotiations, then maybe. Those compensations have to be cut in half to happen.
How NHL offer sheets work and six players who could get one - Sportsnet.ca
Nobody would have offered 8.2M for Nylander, to lose 1st + 1st +2nd +3rd.
Problem A) - you overpay (by 1.3M compared for the current contract) and on some time scale, this creates a salary cap problem.
Problem B) - you lose draft picks, which could be cheap but talented ELC guys to help with the salary cap problem you create.
So it's a double effect, you get the player fine, but it's like warm pee in the pants, doesn't help long and problem with cap comes later, and it kills your success. You have to do multiple smart moves to avoid the cap mess and it's very very hard. Offer-sheeting someone is currently the biggest mistake GM can make, imo. Bad asset management with bad cap management.
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BUT
Only players I would offer-sheet, would be 1st overalls like Matthews, because those players are now tough to get via lottery. Tanking could take years, and still you could never have the 1st pick. Everybody scouts so well now, that 1st overalls won't bust anymore kind of at all.
Throwing 4x 1st for a 1st overall guy would be worth it, if the player is real star. They get payed most anyways, so you can offer some high sum which could create a problem for the player owner. But still, the organization who owns the player has to f*** up with their cap pretty bad to lose that guy. In 99% cases they do anything to keep him. They trade other lesser players out to make room.