The national news ran a story Tuesday evening about several close calls involving drones and commercial airliners. One "event" happened at an altitude of several thousand feet. I know the ceiling for RC is 400(?), can the hobby drones fly that far from their transmitter or was this a "commercial use" drone?
If you can see it you can fly it. Radios work incredibly well at line-of-sight. I've had models at an (estimated) altitude of 1500 feet, just floating around in thermals.
One of my gun-toting facebook friends posted a "media guide to automatic weapons" that had pictures of plinking guns, blunderbusses, shotguns, slingshots, crossbows, etc., all identified as "AK-47". I'm sure that a similar guide could be made up with rubber-powered stick planes, ducks, chickens, floating garbage bags, etc., all labeled "drone".