even if he got active again...... who cares. he has lost all powers from orochimaru and as i recall he was still at kakashi's level during the 'save sasuke' arc
Kabuto is still under Izanami. He can only get out of it by the time he accepts who he really is and not just act like someone he wants to be, so it is an indication that Kabuto might turn good.
Izanami is perfect for intervention programs. Itachi should have been a psychologist treating people with identity crisis.