So many ways to get gear now. With Eureka you can have several alt jobs with decent gear.

Why play as a tank or healer in an Alliance raid now. When you can just run as a dps and have the same chance to get the drop.

To compensate this they need to increase the items per chest. Although I really dont see a point in them doing this. Its not like one piece of gear from a 24 man is going to gear your alt.