It's just my 2 cents, but I don't think that making harder or dangerous the DR would be the perfect soultion of all issues.
For example yesterday I got the "pitch-black-pit bug" 2 times trying to descend into laanx dungeon (I often descend there
with more than 60% health) and I don't think the frustration of a dangerous DR would solve anything.
There could be some other, better solution for this issue. One may be "moving" the DR return place (actually Hydlla and Oja)
randomly , so peoples not knowing where they will re-birth, can't use DR as a "shortcut".
Another way (not much original, I know) is givin some kind of maluses after returning from DR. For any player the deads in the last 2 hours
are counted, and the maluses increase with counter until you don't stay out from DR for 2-3 consecutive hours, then the counter is reset to 0.
I would like to remember that actually there isn't a way to resurrrect players dead in a group, and this is IMHO the biggest cause for which
DR should stay as it is...... [yes, even the best player could die for a bit of lag, in certain situations, IMHO ]