Yeah the Drone seems to be single-target only. Even when I attacked multiple targets, Drone would only go for one of them, mostly the last one I hit. Damage doesn't spread to nearby targets. But I'm not sure about PI. I haven't seen any visual effects added to dummies, I suppose none of pets apply any PI at all. It doesn't talk much either. The only phrase I heard is "Engaging enemies" when it starts attacking. Maybe it talks more when it's getting damage. I was only trying it out against sparring targets. Damage-wise it's the weakest out of all pets I tested. The lonely crit actually comes from my sword's range tap.
