Even my Reg is playing as France, I prefer German Empire. Not because my nationality is german, but I like their uniform colours and shape. The Stahlhelm (even if there would be a Pickelhaube) looks cooler than the Adrian helmet. Ok, German Empire didn't really have much or good tanks, but that's okay, they're luckily not in game!
Gladly I'm not unhappy if I need to play as France. But over all I still prefer German Empire.