I'd probably force the mod for extra fuel, just to run it on a Drone smaller than Medium. For car-sized Drones, it sounds pretty reasonable, but I'd offhandedly say that if your Emotitoy can be loaded to poke into a misbehaving teammate and knock them flat on their ass, pre-programmed to do so whenever the software detects 'anger', it'd better have some crazy big batteries.
Troll Sammie: "I'm da boss 'round here, don' you forget it, daisy-eating pixie!"
Elven Rigger: "SAY HELLO TO MY LITTLE FRIEND!" *Holds out plush care-bear.
Troll: "Aww, is so cute..." goes to crush it in his hands.
BZZZZZTTT!