If Vancouver wanted Schneider I wouldn't say he's off the table. That said I think NYR can run with 4 competent RD long term.
You can
A) Move Fox to the left side, which I actually think would be a lot more seamless than it would be for a more traditional blueliner.
B) Move someone else to the left on a lower pairing.
I still think NYR need a top defenseman, so my dream would be
1st pairing LHD- Fox
Miller-Schneider
Vaak/Mancini-Borgen
Assuming of course that we don't trade Miller. Miller could always recover, improve, work better with a different D coach. I'm ambivalent on what to do with him still though I wouldn't shed a tear if both he and Lindgren were dealt mid season or offseason. Th general idea is that I think we should be focused on getting te best defensive 6 we can with depth, and worry little to not-at-all about handedness in the process. It had it's hayday from like 2009-2024 but 3LHD and 3RHD I think is going to become less in vogue moving forward.