I’m surprised that no one has brought up “see and be seen” in this thread. Legitimate drone users, whether hobbyist or professional, shouldn’t object to the factory installing a bright flashing strobe light and/or a transponder squawking a drone-specific code. It’s true that nut-jobs and/or criminals wouldn’t buy such a drone. The criminals are beyond redemption (unless caught), but nut-jobs probably wouldn’t make the effort to build their own drone having no “see and be seen” capability. Combine this with the on-going factory effort to build in limits on where their drones can fly and I think it would make drone use much safer than it is now.