One thing any serious "freeze and ceasefire" plan will need to address: "The Kremlin has in the past ignored ceasefires and pursued its territorial objectives - often blankly denying that it is"
What happens when the Russians inevitable violate the ceasefire and then deny it? Or stage obvious false flags, as they did in the lead up to the invasion?
https://edition.cnn.com/2024/11/29/europe/trump-new-ukraine-envoy-analysis-intl/index.html