Bomb Drone- similar style of drone as the terror drone, however instead of vehicle destruction, these little buggers can jump into buildings, causing explosions, its a shame however it can take time depending on the building to destroy it, if set on its special ability, instead of explosions it can stop all production or use of the building, a simple engineer can fix this however.
This is just a idea I had for a different kind of terror drone, wouldn't it be fun to swarm a base with 100 terror drones and 100 bomb drones? What can survive this?