This suggestion is to look into ranging in regards to PVM in general.
Even with basic gear, players should have a shot at boss monsters such as Vorkath, Zulrah, etc.
I'm running a moderate new player range set up with the rigour prayer unlocked, however, I've noticed I hit a tremendous amount of 0's which I believe shouldn't happen.
Even with a full inventory of food/potions, I have to end up teleporting out in approximately half of the bosses I attempt to kill.
It could be the bosses are set at a high defence or the ranging skill/prayer is not up to par.
Hopefully this thread brings to light this issue; maybe something will be done about it!