> Even if Russians, by some miracle, manage to pry Putin out of power, what then? Will anyone trust any of their leadership?

The only way that could happen is with some Germany post-WW2 level consequences and reckoning. All high level military, intelligence, civilian administration get one way tickets to The Hague for trial, with mandatory permanent exile for those not guilty of crimes. Full demilitarisation. Heavy economic sanctions for the rebuilding of Ukraine, and then Russia itself with loans