The new dungeon que feature kicks ass

[Ruvanal]

That works, EXCEPT, that the system will not allow you to need on ALL items. To prevent Ninja looting, the NEED button is disabled at times. This is the problem that Conc's referring to, when a leather item drops and the only person who wants it is the Plate wearing person and the system for whatever reason decides he can't NEED the item, then the DE/GREED rolls happen and someone who picked DE wins the item and gets a crystal.

I've seen it happen to a PuG hunter wearing leather SP item, a Leather AP item drops and he can't NEED the item and it ends up DE'd in someones bag.

-WimpySmurf

Ditto for a case of a healer trinket dropping. A shadow priest saw it as a very good upgrade over their current trinkets and lost it to being sharded due to not being able to roll need to obtain it since he was playing a DPS spec.