Please add a tweak to your system. Create zones that magnify stress extremely high for the instigator in nice areas that would be unrealistic places to be attacked in the real world. At the same time don't raise stress very high for the defender when he defends himself with non deadly force in the nice areas/ low crime zones. -(One punch knock out?) This system will create a more realistic crime map that matches real world. There are wealthy areas with very little to no crime and other zones with very high crime. Plus players that don't want to be messed with in that way can stick to the good areas as they would in real life while also getting a jazz when they take a trip to the bad areas where crime is more likely to happen.