I actually think it's a good idea. This isn't for your sons $90 star wars toy drone that can fly 200 feet. This is for the drones that can fly a mile or more away from the person flying it
Parrot BeBop Drone and Sky Controller Bundle - Walmart.com
This can fly 2 KM (over 6,000ft)
Air Hogs Star Wars Remote Control Millennium Falcon - Walmart.com
this can fly 200 feet
You don't need to register your bicycle but you do have to register your motorcycle that is anything over 50CCs.
Model airplanes have been around for years and never posed the threat that these do, why? Mainly because a model airplane you have to be able to see it with your own eyes to control it. Drones have cameras and can go far away. The article said they thought there would be 700,000 drones sold in 2015. That's insane.