I've been looking at the maps recently after trying to figure out some stuff to write, and I've noticed that New Mu is quite isolated in the third layer. America, Britain, France, and Atlan all have easy access to the Neo-Tethys and are generally quite close to each other, but New Mu (and the Satsuma) are on the far side of the map. I feel like they should have a larger presence, perhaps not in territory, but in aligned city-states all along the coast. They and Atlan would have been here far longer than the colonials for one, and I feel like it fits their flavour as mercantile orientals. Basically I feel like New Mu shouldn't be defined by their territory so much as they should be by aligned city-states dotted around the place.