Quantity is better than quality. In most games players can reach a point where weaker NPC's simply won't cut it. But if you have enough weaker weaker guys or creatures you can have them function as one strong creature. I got the idea for this from when I noticed the swarms in World Of Darkness didn't have dexterity. Then I realized if a swarm catches you it isn't if they manage to hurt you it is only a question of how badly.