Personally, and for no particular reason other than learning FAA regs on various topics and having studied a goodly assortment of USC Titles....I'm betting that any rules and regs we end up having to deal with will ignore the "type" of contrivance navigating the airspace!!!!!
Instead - I think the rules we end up with will tightly control OPERATIONS within the airspace by defining the airspace proper, as well as what operations will be permitted, what won't be allowed, and what procedures, etc. will have to be followed by whatever contrivance moves through that airspace.
Whether it's an airplane, helo, FPV, flying horse, pig or sUAV, if the regulatory guidance defines the what, how, when, and how not to that those things are supposed to operate within the airspace, the FAA will have achieved it's purpose, and complied with instructions from Congress and Title 49.
It will be very interesting to see how close to the mark my prediction here actually comes to pass.