As Surf Said, it is abusable suggestion.
If 1 low rep request friends , so everything is lost for poor NPC.
But... All the patrols have radios !
And if they encounter a REAL BADASS. - Why they dont call for fire support? Some Hub SWAT or Remnats squadron of Death or Elite Unity Forces, high HP, CA, BA, high skills ?
Pain will be more than gain. And somehow farming will be not that safe )
And if more reinforcements from players - more NPC come to outgun them. Hard to balance, but reputation will worth something.
I just remembered 1 wagon situation before wipe. My mates drove a wagon with stuff from ncr tent and entered encounter. Then all boring NCR PK started to punch them and began one of that never-meant -to-end- TB - fight . And some of GM started to inject muties each turn. And soon enough all players were PWNED by tons of muties. And my mates lost all wagon stuff and tones of gear while defending it.
So maybe it could be scripted? I mean reinforcements from npc factions? will add so much spice in farming )