Maybe omniguard does make sense, moreso than a straight BG would
If I'm operating under the assumption that mafia have access to ninja and strongman kills, the ninja kill explains why whydon wouldn't have seen anyone trying to kill me and the strongman justifies the presence of a protective role. Which, given the number of non kill pseudo investigative actions justifies the safeguard as a risk reward payoff
But then, if Haruno is to be believed as an omniguard (which a failed neighbourizer supports)...
Whydon how in the hell did you successfully watch them both visit me?
Crackpot(?) Theory, knights and haruno are both scum who both tried to shoot me but kill fails if both try to use it