Setting NPCs to allies, neutral, or foe and having NPCs on those teams react to each other. Meaning setting a group to be on your side, then another group to be hostile towards player and those 'allied' NPCs. Kind of tired that in FPSCx9 all you could do was have people stand there and act stupid or attack player, there was no setup for teams/factions/groups, only player vs them. Be nice to see this a default feature in Reloaded so we can have AI actually interact more in games.
Knowledge of the undead since the age of 4.