Patton and Churchill were pretty prescient with regards to the peaceful intentions of papa Joe and the Soviets.
I know there was unhappiness with where the lines were drawn in Europe (especially among the generals), but I don't think there was ever any serious consideration to allowing German Nazism or any form of nazism/fascism to be in control in east europe. Even if there was a plan to support a "buffer of Nazism", the Soviets wouldn't have allowed it.
So I don't think there was really a choice for East Europe post-war, except in where the line was drawn, and then later in a strategy for facing communism, the Soviets, and their satellite gov'ns.
No there wasn't ever under consideration -- because having communism in East Europe was not as bad as having Naziism in East Europe. Which is what I originally said.