Jack,
Let me explain it this way - if you produce a game that uses the big tanks, odds are that France will not be in it. Games tend to use the major powers (US/UK/Jap/GER/USSR).
If you made a game that used all those, AND France - congrats… you just made AAGlobal. Except much bigger, as your pieces are bigger.
Therefore, we can treat the French as a stand-alone set, in which case it makes all the sense in the world to fill a void that only exists for France and Italy - country specific pieces. Let’s be honest, every other country has unit specific tanks so new ones might be a harder sell, but it is a no-brainer for France & Italy.
As you have already cut Italy, and FMG is about to release their Italian pieces, the best course of action is for you to fulfill a market need - French unique pieces.
Thoughts?