Crazy trade idea (probably more suited for the summer than right now):
get DeBrincat (with extension), Pinto, Brannstrom
get Dobson, Beauvillier/Bailey, Pageau
Barzal gets his shooter, Pinto is a NY kid and can take over for Nelson at 2C eventually, Brannstrom can help run their PP
We get a young top pairing two-way RD, a replacement winger for a year to play on the 2nd/3rd line until Greig is ready (or longer if Formenton is finished), and Pageau can hold down the 3rd line C position for the next 3 years at an average salary of 4M (front-loaded deal).
NY would need to be re-sign Mayfield and be comfortable with him and Pulock as their top 2 RDs for this to be even considered of course, but I think the value is there if they would be fine with that.
Next season:
Tkachuk - Norris - Batherson
Beauvillier - Stutzle - Giroux
Formenton - Pageau - Joseph
Kelly/Greig - Kastelic - Watson
Chabot - Dobson
Sanderson - Zub
Holden - Thomson/JBD
Talbot?
Forsberg