+1 Forward and -1 Forward are actually prescriptive in a narrative sense as well. So if you open this up and allow PC NPC move triggers, you can easily use the + or - as what the aftermath of that interaction was for the individual. So like if a gunlugger gives someone a minus one forward after man handling them physically or emotionally, the resulting narrative the NPC takes place in can be cast in a negative light. Things just don't go right, they push where they shouldn't, they don't show up where they should be, or the like. The reverse is true for the opposite. You only need to cast the negative or the positive once, and it probably shouldnt be weaponized. -1 forward doesn't mean the npc will get shot in the head during the next gunfight, just that barring other PCs acting on them, things either turn out a little better or a little worse then they otherwise wouldve.