I think this is one of the big issues overall. With other games you get sweet loot by killing the high end bosses or completing difficult tasks. Other people see your rare armor piece or weapon in game and are like "Whoa, that guy beat so and so to get that" etc. Destiny promised that in the teasers/hype but so far it has not been implemented very well. The fact that major bosses don't even have loot tables is ridiculous.