The zerg style's also problematic because it makes it really hard for groups that end up with gatherers or who have people drop to get credit on the mobs unless they can get a lucky claim. It also gets messy because you have to tunnel vision the Vs and NMs to make sure you get credit, which can lead to loose monsters running around and causing havoc.

I can't imagine they intended for the gear to drop so readily, in general, but as usual they seem to have misjudged how we would approach the content (just as they did with Hunts).