We really need two extra toggle buttons in the Combat NPC page, where we can setup what kind of stance they have and what fighting style they use, based on whether they are melee or ranged.

Stances:

Offensive: The NPC's will pursue targets until they are dead. (Basically what they're set to now.)

Defensive: The NPC will only pursue targets up to a certain distance. If that distance is reached, they will completely retreat to either their home area, or the point on their combat patrol route from which they were aggroed. (In order to prevent endless looping around their pursue limit distance. The specific distance can be changed via Config Option)

Stand Ground: The NPC will not move to engage targets, unless knocked back. (Likely only useful for ranged, but useful nonetheless)

The "Combat Stylings" would also be useful to give NPC's separate combat priorities, to keep them from ganging up on singular targets, as well as possibly giving unique abilities

Knight Style: The Combat NPC will prioritize targeting enemies that are attacking other NPC's, and have a 25% chance of inflicting Slowness I with each strike.

Rogue Style: The Combat NPC will prioritize targeting enemies that are NOT attacking the Combat NPC, and has a 25% chance of inflicting Poison I with each strike.

Warrior Style: The Combat NPC will prioritize targets closest to the Combat NPC and has a 25% Chance of inflicting Blindness with each strike.

Longbowman Style: The Combat NPC will prioritize targets farthest from the Combat NPC, and has a 25% chance of inflicting Hunger I with each strike.

Ranger Style: The Combat NPC will prioritize targets closest to the Combat NPC, and will actively run from enemies to remain at a distance from them.

I think combining these two types of settings will give people just about all the customization they need for setting up Combat NPC's. All that'd be left is to improve AW2 NPC's ability to better utilize gear from say balkor's weapons and/or Mine and Blade.