I have a close relative at NASA. We debated for a couple of hours about the issue of "what is a drone which is flown in a dangerous fashion as opposed to a model airplane operated by an AMA member who really doesn't need more regulation other than his/her club and the AMA."
I lost the debate. There is no way to distinguish between the two insofar as public airspace is concerned.
There are good reasons why the public airspace is regulated and monitored by the FAA, and we are going to have to face up to that fact and accept the responsibility that comes with sharing the public airspace with others.
To make it easier to accept this just think about the next time you (or a loved one) fly on a commercial airline. Do you really want the possibility of a radio controlled aircraft of any kind in the area with that airplane? I don't.