Only the neck, cloak and face pieces are really worthless from what I can see. I assume the reason for this is because every named mob and it's mother ALSO drops neck/face/cloak pieces. Rings/Earrings are still worth something if only because you need 2 of each. All the zonewide visible armor slots still sell pretty darn well. And fear touched and dreadmotes still sell incredibly well so I don't really see a valid complaint here.