- Real nations have the advantage of being known, in all sorts of ways, and any opposing force so built can play other opponents without them asking embarassing questions about why you have American Civil War Zouaves painted up like thatBe curious to get people's opinions. Also, we are in the south to mid-Balkans, so if anybody is close by on our borders, we need to know.....
- One's own imagination can furnish more opponents than one can shake a stick at, but the worry is that they are all a bit same-ey.
- Literary Imagi-nations are a good bet, as you can glean something of them from the books/films/comics/whatever, but you risk the "how come your Bordurian Mountain Regiment look like Greek Evzones, when everyone knows they should look more like American Civil War zouaves" problem* :-)
Besides, sources of Bordurian history in 1756 are sadly sparse.
- Other people's Imagi-Nations are very tempting, as there is a backstory and (in theory) two heads are better than one in creating campaigns etc, even though the endgame is to lop one head off. (Owing to poor translation, New Byzantium takes Kipling's advice rather literally, and have worked out the best way to cut to the chase is to ensure that all around you do actually lose their heads...). The problem with playing with Other People is thay can be so ill mannered as to win the battles, so this option shall have to be watched with great care.
* That I have just created :-)