The Real problem that faces the FAA is their definition of AirCraft and the FAA's Lack of different Categories, Class & Type for Models as their is with Full Scale. If they did differentiate between Airplane (fixed wing) , Rotor Craft & Multirotor and Lighter than air. Rules/FAR's could be for a specific Category and Class. That would deal with the real problem of DRONES i.e. Multi Rotors Separately. Why the FAA has grouped all models together (when they don't do it for Full Scale) is the question we and AMA should be asking.
FAA's Definitions for Category, Class and Type.
Category:
(1) As used with respect to the certification, ratings, privileges, and limitations of airmen, means a broad classification of aircraft. Examples include: airplane; rotorcraft; glider; and lighter-than-air; and
(2) As used with respect to the certification of aircraft, means a grouping of aircraft based upon intended use or operating limitations. Examples include: transport, normal, utility, acrobatic, limited, restricted, and provisional.
Category of Special Airworthiness Certificates. The term “category” also is used to identify the six specific certification processes and the seven types of special airworthiness certificates issued.
Class:
(1) As used with respect to the certification, ratings, privileges, and limitations of airmen, means a classification of aircraft within a category having similar operating characteristics. Examples include: single engine; multiengine; land; water; gyroplane; helicopter; airship; and free balloon; and
(2) As used with respect to the certification of aircraft, means a broad grouping of aircraft having similar characteristics of propulsion, flight, or landing. Examples include: airplane; rotorcraft; glider; balloon; landplane; and seaplane.
Type:
(1) As used with respect to the certification, ratings, privileges, and limitations of airmen, means a specific make and basic model of aircraft, including modifications thereto that do not change its handling or flight characteristics. Examples include: DC–7, 1049, and F–27; and
(2) As used with respect to the certification of aircraft, means those aircraft which are similar in design. Examples include: DC–7 and DC–7C; 1049G and 1049H; and F–27 and F–27F.