Hey Gargantua, I definitely see where you are coming from about France.
Although PTV and BM both remove substantial disincentives to liberating france (e.g., eliminating the repeat-capital-plunder dynamic of G40, adding US NOs for mere presence in Normandy, etc.), it remains the case that France is all-too-frequently seen as a no-go zone for the Allies until after the fate of Western Europe is already decided.
One way to help rectify this problem would be to give France a national objective (for example, +5 for controlling France, Normandy, Southern France), putting more Allied income on the table for a liberated France, than without it.
I am apprehensive about the idea of a “liberate” button for France, both because of the coding challenges it would present, and because it introduces yet another faction-specific dynamic, which we generally try to avoid unless necessary.
I have added the proposal of the French NO to the list of ideas for us to consider in version 5 of the map.