@LHoffman:
I do believe that the idea of a French defection/commandeer scenario has been thrown about before, both with the naval element and some sort of Vichy France rule. I personally do not care for any Vichy France additions since it is superfluous and would unnecessarily complicate play. […] I think this would make games a bit more interesting and also realistic, since French naval squadrons did not actually fight with the Allies like often happens in the game. (I know individual French ships did, but not on the scale that is referenced in A&A.)
The part of the OOB rules which says “This game doesn’t deal with the German installment of the Vichy government in France. All French units, after the fall of France, will continue to be controlled by the player that was selected to control France (US or UK).” is noteworthy because, essentially, it means that the game depicts an alternate-history scenario in which France set up a government in exile rather than surrendering and that it kept fighting on the Allied side from its colonial empire. So while the actual historical events of WWII did set up a situation in which the Vichy-controlled French fleet was mostly inactive, the game itself provides a good justification for giving the French fleet a more active role.