There is also very good reason for commercial operators to remove height restrictions. Those inspecting structures taller than 400’ need to fly at heights necessary to cover the entire structure. In the U.S. a commercial operator is allowed to fly above a tall structure if they remain within 400’ of the structure. For example, if the operator was inspecting a 2000’ tall tower or building they can legally fly up to 400’ above the tower as long as they remain within 400 lateral feet if the structure or building. High rise buildings are typically much taller than 400’ and using drones for inspecting them or other purposes means they have to fly higher than 400’. Power line inspections spanning a river or gorge would be another good reason to fly higher than 400’.
Even an artist that shoots tall buildings to use the photos to create art sold for profit would be a commercial entity entitled to operate above 400’ as long as they were 107 certified. I have a drone photo of a big city high rise building taken from an elevation 800’ above the ground, more than 200’ below the top of the building. Completely legal as it was shot within 400’ lateral feet of the building.
Personally, I set the height limit on all my drones to the maximum obtainable. If height limits can be completely removed, that is done. I have no problems looking at the active telemetry and adjusting altitude as needed to comply with regulatory requirements. We do the same thing in controlling the speed, position, and direction of our automobiles. There should be no need to employ outside control as the operator should have the intelligence necessary to effectively deal with control of the vehicle/aircraft.