My roboticist opinion is that you need extremely developed AI to do what you’re saying. It requires navigational capabilities that don’t exist yet except in very open spaces like fields. Also, lightweight drones which could do these fast maneuvers aren’t very robust; you can literally slap them down with some pain. I get that even with a low success rate it could be a disaster if you have a huge amount of them deployed somewhat.
I don't think we've fully solved the navigation problem, but I think we're close and it will certainly be solved before the power problem. A quick google got me this:
This work is amazing and I’m a big fan of Tedrake; however the gap between what you’re showing here and a drone a chases humans and slice their jugular might be bigger than you think. It’s very hard to extrapolate stuff like that.
