There are difficulties in coming up with such a doctrine. For one, Nazi ideology self-consciously planned to essentially recreate the American West in the Soviet Union, with Slavs and Jews in place of Indians (Hitler claimed to be a fan of Karl May’s work—though apparently he glossed over the moral teaching). There is no part of france that is so appealing from this perspective as the Black Earth region that stretches from southern Poland to the vicinity of Stalingrad.
For another, there is a long-standing German tradition of contempt for Slavic culture, going back to the Medieval drang nach osten. The dislike of France was not remotely analogous—France was hated but not despised.
For a third, the Soviet Union was the more obviously bigger and stronger threat.
All in all, I do not think a right-wing Francophobic ideology is likely at all in Germany.
Now, left-wing atrocities are a different story. A Red Germany allied to the USSR can easily, I think, inflict the worst excesses of Stalinism in France, if France is popularly anticommunist.