I think what the OP is saying with "ninja looting" is that the person who might roll as tank will avoid doing so if they need to gear an alt because if they roll tank and the gear drops they have to roll Greed against everyone else which includes people who lot on gear just to trade for seals or "just to collect". In the eyes of that particular player the guy who just lotted on an i70 mage body while standing there wearing High Allagan Robe of Casting is ninjaing his drop because being in the dungeon on a different class is preventing him from Needing that gear. I do it myself on Turn 1. I only run Turn 1 on SCH right now to farm healing gear. I'd gladly roll tank if I got a Greed party where I could claim a healer piece or if there was a way to guarantee a shot at that healer loot but I don't think it should be tanks only. More like an option to pick a class alternate to the one you're rolling as your "Need" class and forfeit "Need" on your current class.