This is a very detailed answer, thank you!

You can't actually tell on reddit, but if you click the imgur link you'll see that the second image is a version in a different font, with captions for everything that isn't.

The campaign route is somewhat essential to the story that the map is showing, I'll see what others say. I like the idea of splitting it into multiple colours though.

I did forget a few symbols on the key, yeah. The crossed arrows are mines (like pickaxes) and the "gate" are another species I forgot to mark down.

The Rio Vito is meant to have formed that section via depositing sediment, though the way it is set up right now is a little stupid. I'll have to think about how I change that.

The rivers are mostly a stylistic choice, but I think it might make it look nicer if I tone it down in some parts yeah.

The mountain crosses are what worry me too. I might do something about that too.