@Quedr Humans have a natural sense of direction, some better then others that's why it is called a "sense" of direction. If asked to find north in an unknown environment many people can get close, if they can't then they use a compass. But once they have determined which way is north then they can still find it. If you spun around in a circle after being shown north, you would still be able to sense it. If you do the same on a computer it is much easier to loos your way. I am not suggesting making it a permanent HUD but let it be an option for those of us how can't render the radio tower 1000 meters in the distance that other are using for reference.
http://www.jstor.org/discover/10.2307/1515565?uid=3739960&uid=2&uid=4&uid=3739256&sid=21101919031891