Not being widely reported, but Russia has specified public terms for an end to the invasion: Ukraine neutrality constitutionally assured, Crimea to Russia, and the independence of the Donetsk and Lugansk republics recognised.
https://www.reuters.com/world/kremlin-says-russian-military-action-will-stop-moment-if-ukraine-meets-2022-03-07/
Apart from the stringent and intolerable in principle demands about Ukraine's accession to the EU or NATO, this is basically the Minsk terms from years ago.
It would be called appeasement by some, but if casualties could be stopped while some other way to loosen Putin's grip is thought about, it seems negotiating on some form of these terms could save a lot of lives.
I'm vehemently against NATO escalation or attempting to "end" Putin because of the likely human costs, and I would hope, maybe naively—I have no idea whether this proposal has substance—for something like this to happen.Â