Why does it rig drones? Ask this yourself.
Is this AI curious about the "programming and metaphorics" of the Real World? Maybe it's a controlfreak and thinks that it should control that "Realitylayer" too (furthermore: Has he plans about conquering the Astral?)
Does it use his drones as subordinates, avatars or mere tools? Are Pilot Programs "siblings" to him which he wants to awake with his own presence?
What program did it came from? Especially interesting if he used to be a mere "Command" Program, he's more of a controller, than rigger (doesn't need the "Piloting Origin per fluff). Or are his origins to find in something quite different, maybe he sprung from an Real Time Strategy MMO and just does what he did before... only to replace programmed units and maps with drones and the real world. Or more exotic: Something that has nothing to do with drones or controlling and directing stuff.
Yes, i design AIs for fun