Wasn't there some mod that added dozens of new countries in HoI2?
Other than the historical ones I'd like to see some political ones like Fascist Britain or Communist France.
Ah, thank you, you reminded me of something I wanted to post but had forgotten for a few hours.
In HoI2, states which switched tag when couped were, AFAIK, hardcoded. These included USSR > Russia, France > Vichy France and Nazi Germany > East/West Germany. My wish is that this be softcoded in HoI3, so as we may edit it in .txt files. This shouldn't be too difficult to add, and it would of course be an invaluable tool for modders.
With an EU3 system of almost infinite tags (and thus flags as well), we can look forward to plenty of states popping up as a result of coups, &c.