Hey Pete! I just got an email from Itch about this. Long time no speak! Ben
TheBunyip
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Your last point might be true (I have no way to verify either way, but I have seen a lot of paths and roads that follow a waterway for extended periods - I expect it was just easier to build a road on the flat near a lazy river, and they would then part ways at some point). However, in the case where a river makes building a road unnecessary, wouldn't you expect the river to connect up settlements?
I have one question/suggestion...
Am I correct in thinking that the rivers cannot follow roads? I have a campaign with a town in it where a road through the town follows the river, and it looks like your generation algorithm can't ever produce this situation (at least, I tried a lot of times and never saw it happen). If it can't do this, it would be a cool feature, to add some extra verisimilitude I think - paths and roads often build up this way in real life.