I would propose that we only have the nation's that we're really in the Carribiean Historically!
Everyone who loves the game would keep playing it no matter what nation! And you mabey resolve the issue with the Overpopulated Russian nation since ATM of course if u are Russian Player you like Playing in Russian Nation Pirates are Fine they where in the Carribiean Sweden, Denmark, etc etc were Small but still they were there! Poland Prussia Russia China etc etc not really a historical......
It would be Hard though since the game is no longer in Beta and I don't think it is possible without a partial port wipe for some sort.....
Best Regards from Germany
Stay Safe stay Healthy everyone