So I am working on my third Emp key.
The camp for this key is probably the worst part of leveling up a character. The pouch and Idol are fairly simple camps. Commander Zazuzh is semi common and his drop is semi common, so he isnt that bad. The pouch from the taskmaster is probably the easiest part. But the final 2 items the ring from Commander Zerozsh is a long camp. I have spent 3 hours today camping him and he does not spawn often, and of the 4 spawns I got, none dropped the ring. I am not sure the goals of this key is meant to be this long of a camp.
During the same time, someone else ahs been camping the insignia up by the Emporer portal and has had similar results, infrequent named spawns and no insignia drops.
I think this is something you might want to address, I dont mind the drop being uncommon, but making the drop uncommon on an uncommon mob spawn and it ends up being pretty rare and a huge time sink.