Jack,
Waiting for the game to come out sounds like a good idea.
Honestly, I feel if you come out with a set of French pieces that has 2-3 different models of tanks, and perhaps an artillery piece and fighter plane (so 5 molds total), it will be an A&A hit. The community now is much bigger than it was for the 1984 version, and has access to the internet for variant info, etc (you have 500+ friends on facebook!).
You have to tap that market. Use the French set as a trial - make the 5 molds, sell it for your regular set price ($12 is a fantastic pricepoint btw). Don’t make infantry molds - they really aren’t that popular.
If this blows up and fails (it won’t), you have only wasted 2 molds (the Char B and the SOMUA). You can recycle the rest and make infantry pieces as normal, and the plane *nd artiller mold can be saved for your future piece sets. - truly believe the market is ripe for this - thoughts?