Very nice article! I would like to add one comment:
When you are auto-routing in the boonies, you may not end up with many turn prompts since the program doesn't have any "major" intersections to work with. I like to add a via point at most minor intersections, and at major features like a river or lake access.
This way I get some "approaching via point" prompts that normally wouldn't ever occur with a basic computer generated route.