Not so hard but time consuming perhaps.
It was more as a spinoff of the tribe system and land management but seemed to nestle best with buddies.
Duel statues already bypass infamy. Same if statement can likely be used for this.
Friendly people deal no damage in tribes. If it’s cordial then a message to the player would clear it up.
This is mostly devil’s advocate here as even though I suggested it it’s not a feature I’d like. Just one I thought may help balance out the playing field :p