I too, am looking for this option, also basically for having different measurement units, specifically having DistToHome etc. in nautical miles. So I was looking at possibly editing the config file to somehow have other options besides just km and ft as distance options.
Will there be other measurement units brought out for this? - can we not get an option for getting raw units from mission planner, set them through some strings/algorythms and then display them on the HUD??