Drones should be defined as devices that can act autonomously or be guided remotely through a live video stream all of which done without line of sight flying. I can certainly see the risks with these devices.
Model aircraft should be defined as radio control aircraft that does not have autonomous or first person view features and is flown line of sight. The risks with "model aircraft" are much lower than "Drones" as defined above. The model aircraft hobbyist that have been flying for many decades safely should not be clumped in with drones when it comes to regulations. There are already regulations for "Model aircraft" defined by the FAA which AMA helps to define for hobbyists.
With that said there still should be a minimum drone size that would not be regulated. A $15 drone that you can buy at walmwart and only fly within about 100 feet before going out of range and not have GPS should not be burdened with registration or any such restrictions.
LA county just passed a low restricting flying to 400 feet in that city for all unmanned aircraft clumping in "model aircraft" that the RC hobbyist use including sailplanes that do not have motors. That pretty much kills the sailplane hobby where you fly a non motorized aircraft and try to find thermals to climb up higher. The launch heights are around 500 to 600 feet when launched by a winch from the ground. They wouldn't even be able to launch their model aircraft.
I mainly fly Discus Hand Launch Gilders (DLG) that do not have motors to propel them. You spin around while grabbing the wing and release it like a discus which launches the aircraft to around 130 to 280 feet. Once gravity kicks in you flatten out and then search for thermals to take you higher. The thermals are just forming around that height and require flying to around 500 to 800 feet to get to the best air for thermals. Keep in mind DLGs do not have motors so we completely depend on the air heating up and going up taking our glider with it. We always have line of sight when flying and there are no special electronics on them. No GPS, etc. There are dozens of competitions every year in the US (f3k) and it would be very sad for us to lose the hobby because of these new "Drones" that are becoming popular that have GPS and autonomous features. My fear is that by clumping all the hobby aircraft like sailplanes into the "Drone" definition they will be restricted too and ruin this great hobby.