Im still not convinced it's entirely a coaching problem. I think it is a group of entitled, overpaid veterans who lost their drive to play. This is not a team scrambling to make the playoffs. They are going through the motions and just collecting a check.
Only Rangers I'd stick with are Panarin, who routinely produces despite being anchored to Lafreniere whom is an offensive blackmore, Fox, and Shesterkin. I'd also like to keep Cuylle too. Everyone else I'd be willing to move.
The core is rotted and has to go.