You have to consider we've never seen William Nylander perform at a PPG 1.40, 115 point pace before, which is similar production to Matthews in his 2022 Hart Trophy season, and Matthews also hitting his stride again. Marner is with Tavares and falling back into the 3 spot. If it keeps up, this is a very different Big 4 dynamic at the top of the roster.
All I hear is the clamor for change but I don't see anything that comes close to a viable solution:
-"Getting a top pairing D from a team that needs scoring" appears to be code for "I have no idea what is out there."
-Selling off at the deadline so we don't waste Matthews years ignores the fact that it's an unprecedented move for a playoff team to sell off it's leading scorer, future picks won't the team away.
-Trading for a depth, aka 3C, goalie, defenseman is describing all the stuff you need to line up behind Nylander without even replacing any of his production.
Sign the man, retain his rights, don't give him every protection, and reserve the right to make a decision at a later date.