I'm going to rework the whole rivers subsystem of the generator at some point. After that I'll try to implement a wider range of options for rivers including deltas, tributaries, ring moats etc.
Fords for crossing small to medium sized rivers would be good. As a non-coder, I have no idea how difficult that would be, but it would be greatly appreciated. Much like the ability to set and designate paths, trails, transit/plat lines, but then again, borders make good frenemies, right?