Just because the FAA does not control the airspace down around the blades of grass does not make that a safe place to play with deadly equipment. Those that say this stuff is not deadly have no clue as to the number of recent deaths to helicopters or the way electric motors turning propellers damage that which they hit and are playing the smoke and mirror game of laws and regulations rather than safety for the uninvolved public they wish to put at risk while they make money.
Look I have nothing against safety. And I have no issue if done with state or local government. I also have no plans to do commercial R/C or sUAV's. I am more worried that this could cause the FAA to get a foothold onto regulating our models. I also do not think it needs to be as complicated as to do MTBF tests for servo's. However if the FAA does this for the larger UAV's flying through navigable airspace then you could perhaps co opt from those tests.