@Tjoek Hello, the map is looking great. That is good news on the Moscow roundel too. On your 3 observations, first with the German iron cross roundel you are correct. It is an iconic image of WW1 and it for sure has to stay!
Secondly, offsetting the Portuguese and Spanish coat of arms in my opinion does not fit well with the overall look of the game roundel. Aesthetically it does not flow well with the other game roundels.
Third, I personally like the coat of arms placed in the Bulgarian, Romanian, and Holland roundels as in the game map. It gives them a distinctive monarch or kingdom appearance. I love Serbian coat of arms roundel nearby. It distinguishes a WW1 map from a WW2 era map. Also, Historical Board Gaming has all of the same custom AA1914 map Roundels for sell for those interested or using house rules.
I think most people prefer the game map roundels for continuity. Your crisp and bright colors look nice. Hope this helps.
The Plastic Commando