In my view, the FAA is pursuing the Drone's=multi rotor sUAV's , that have been constantly in the news regarding near misses with full scale aircraft Airliners and Police copters, and FireFighting Tankers. Creating huge problems in every area, airports cities, fields, mountains,city parks, you name it. Oh don't forget the White House, very very important stuff there.

Not once was a fixed wing aircraft in the RC catagory ever mentioned , because it did not happen with fixed wing RC aircraft, just the new drones that have been on the market the last year or so.
AGAIN, it is not the DRONES the FAA is trying to regulate, but the OWNERS of them, and the only possible way is to have the new buyers register the thing with serial # etc with the seller of the Drone, the seller sends the info to the FAA so they can track it to that person if something ever happens. Will that happen? who know's.
The fools that have created this mess in the beginning by violating every possible rule of Flight Safety and doing it repeatedly in almost every city in the U.S.A. Lets not forget the Privacy Issues of Trespassing, here is the other side of this alligator with Jaws wide open waiting. It never ends with these clowns.!!!
I, in my opinion do not think the FAA will ever try to regulate or have people register their Giant Scale Yak's or EXTRA's. I sure hope not, I have too many of em!!!!!!!!!