I just saw this old thread and i saw a lot of really good ideas. I for one like spending time in the DR when i die. Its nice to be able to help lost people and explore it(too bad its so small). I was reading through and i saw the maze idea and the city idea. I also saw a load of other stuff, so heres my idea:
-Have stat drain as you stay in the DR, with the minimum being 25-15%
-Create a "ghoul city", this would have a temple to Dakkru where you could pay to have your drainage removed before leaving, and several portals, one to Hydlaa(spelling?) and the rest random points in Yiakum. These would switch around.
-Create a maze outside of the ghoul city, the more times you die, the farther into you would be pushed.

Thats all i have! Maybe this thread will be revived.