As a GA pilot, one of the complications of the navigation exams for small planes was navigation and calculation of magnetic versus true and the entire range of derivations. It was mostly useless because of the local legislation demand to fly only in visual conditions (IFR not allowed for small planes), but it made the exams unnecessarily harder. The ever worse part was the demand to be able to calculate a flight path to something like New York, where Earth curvature matters, for planes that cannot fly more than 1000km at low altitude and speed, so they are never allowed to fly over the ocean or on distances big enough to have a significant difference between a straight line on the map and the shortest route. I am happy to see at least one of these going away, even in 9 years.