Here’s what we do in my game if your interested.
This maybe a simple way and maybe not for you guys.
I don’t believe in making Normandy an axis neutral. Historical wise.
If axis controls Normandy and only time is where if allies retake it back place 3 or 4 French inf there for free to represent the French Patriotism and or resistance.
If allies take back Paris place 6 inf there for same thing. But since there’s a major ic maybe just go with the 12 icp rule instead. Not gonna get into other debates on this game.
If you don’t bring enough allies to hold then that’s your fault. Lol
Also if London falls Ottawa becomes new capital and UK can collect money on its end of turn. Wether you make the IC in Quebec a major or make UK have to upgrade it. But only time in game if London falls.
Just my 2 and 1/2 cents.