Something like this but with NPCs generally having more reactivity to guns being fired near them for no reason (or presumably an attack that missed), beyond blandly saying "hey, cut that out!".
A big immersion-breaking thing while out and about in the wastes is that when you shoot an NPC and miss, and they wouldn't even give it the ghost of a moment's notice. Could that be changed? Also it would be great if creatures would run away from or seek the source of gunshots as well.