This looks interesting!
This will probably totally mess with the Biter pathing?
Maybe you could add pebbles in some river sport, that will act as crossings? So a different variation of the boulders/rocks, but that only appear in rivers, so biters/players can cross?
Alien Biomes uses height in calculating tree types. I wonder if you could somehow use that to calculate the river paths also. A little less round rivers and more flowing towards lakes.
Very cool tough!
