The problem is that those same wonderful properties make them completely unsuitable for the task at hand. They have a weight threshold that severely limits the

The problem is that those same wonderful properties make them completely unsuitable for the task at hand. They have a weight threshold that severely limits their uses and they are unsafe for carrying anything important that cannot take a drop from max height at max velocity given the failure modes. Making better/smarter autopilots for a small helicopter or VTOL aircraft that can actually fly point to point would be more useful and might actually work, unlike this quadcopter idea.