The Allied policy was unconditional surrender. Ok, fine.
Japan ended up surrendering "unconditionally" on the condition the Emperor remained.
My suspicion is that part of the reason for this was that the United States effectively controlled surrender negotiations whereas the German situation was far different.
That brings me to my question. While there is no plausible Allied victory in which Unconditional Surrender is not the policy, what would Germany have to accomplish to attach Japan-esque "conditions" to an Unconditional Surrender?
I don't think political changes in Germany, such as Himmler or the Wehrmacht taking power, would do a thing. So, that leaves the battlefield. What could the Germans REALISTICALLY accomplish on the battlefield, with a POD after D-Day and Bagration, against either the Western Allies or the Soviets, to obtain better surrender conditions?