I think that you should die when you fall off the map. I used to jut do that to get back to hydlaa, bypassing even DR.
I also think that if you type /die BEFORE you have a failed /unstick, you should get a penalty. It would help at least a little bit.
For when going to death realm is required for some reason, and not just an aspect of being hit in the face with an ulber deadly claw... There could be on or a few places meant to take you to death realm, through some mechanism (maybe a painless death). This would allow people to still go to death realm without making it much of a shortcut to get there. It would probably work best if there were one place to do this, somewhere in between Oja and Hydlaa. Maybe also it takes some time to get into death realm this way?