Attacking people doing BQ adds nothing really gameplay wise.
Might provoke some interesting pvp though, itll piss people off enough to sig.
The only case where , imo, the attacker should just get taken care of by a GN is if they will camp the GBQ zone killing questers and running to sz if any pk shows up. Provoking pvp, sure. Farming lowbies just because nobody is there to stop you... gtfo.