KIN raiders never gave loot the a person that had already been loot locked to that boss. We did something simular. We did 20 runs where we had smacked 2-3 mains in each run who all needed diffrent tokens. As he says rather than rushing through DS for rankings on the earlier bosses they mixed their runs with alts / mains to maximize gear potiential for Second half of Dragon Soul, which is rather clever ;p, It absolutely gave them a huge advantage on Spine