I like the bola-shot shotgun shell. I was thinking of how to eliminate the need for super precise targeting, to keep unit cost and complexity at a minimum.
How about a stringy polymer like Silly String but serious. Formulate it to be gummy and stronger and use a tiny charge to eject it through orifices in all directions. It would gum up props and cause the target to drop out of the sky. You’d only need a drone complex enough to get within a couple of feet of the target in any direction.