Sooo in true mmorpg fashion I think Destiny needs a "dark" area. A place on each patrol map where you are alone in the wild. Do you brave it for the rewards and daily or weekly bounties? Or do you cower away, afraid another guardian is waiting for the chance to pick you off. Extra glimmer per guardian kills and potentially even grabbing some materials or even equipment/weapons from the guardian whose light you just put out. This, or make each patrol area open to being pvp so you know your own risks when going in, but the rewards are greater all around.