There are no possible compromises after winter 41/42. By then it was clear that Nazi ideas about the future of Europe had to be taken literally and that meant that for Russia it was a fight to the death.The poster who suggested a B=L style peace was. I think a little too hopeful. In reality any peace deal reality would be far more of a compromise. Maybe the Germans get to keep some territory. Whether this happens depends on the situation at the end if hostilities. Have either Hitler or Stalin been "replaced by a subordinate for example. What state are the armies in at this point?
Any process of de-nazification of Germany after 41 was going to be so divisive and brutal that the country would be defenseless (much like Russia in 1918).
Totalitarian regimes fight total wars.