I never really knew what the deal is with the radial grid like on this map, it's a cartographical thing I don't understand. Why is the center of it in the top right? Keep in mind I don't know if it's a bad thing or not
You've got your rivers branching/combining in more or less the same vertical line. Maybe add some variation there?
Besides that, I'm really loving it so far. Hopefully we'll see some more updates for this.