Great concept! Looks like the main focus for now was US and German states and territories, which probably is a good proving ground for the general system. One

Great concept! Looks like the main focus for now was US and German states and territories, which probably is a good proving ground for the general system. One thing you'll have to contend with, that those two mostly won't be test cases for, is the historical fact that lots of historical territories have fuzzy borders, either because we don't now know what the borders were, or because they were sort of amorphous even at the time. Early US states and territories "solved" this problem by drawing arbitrary nonsense lines on a piece of paper, and your map faithfully reflects that, but the trick won't work for a lot of others.