What exactly is so wrong about being nationalistic anyway? Sure, maybe it's not that realistic, but seriously, who actually thinks it detracts in such a way that BM can't be a low-fantasy Medieval-period game?
Haven't any of us watched those period dramas? I know there are a bunch of ancient Chinese period dramas where people seriously did not dress like that, did not talk like that, and did not act like that (incidentally, no matter how good their kung fu, no one could fly back then). But why is it that way? For one thing, the real thing is kind of boring. As Indirik said, a duchy-focused group is really small. Sometimes, it fosters community. more often than not you'd feel like you're the only living person in the entire place. Heck, even some realms feel dead, and not all of them single duchy either.
Then I'll just rename my idea to the United Nations and get on with it!
