Not sure how many of you have done t2 Jeuno VW, but there are mobs that have add effects on ws that STAY THROUGH DEATH. So the burn effect (maybe 30/tic) from Hadal Summons (corse t2) will find itself on you again after you get up. No, it is not an aura since it was on the other side of the room when I got up. So if you don't have a vicar's or a whm (/whm) ready to erase you, you die again (also why it doesn't seem like an aura, since once a whm removes, it doesn't go back on even in range). Tada, rng made useless from 1 death. Other jobs (except magic dmg) can continue to deal dmg since they only suffer from slow (which with gimp hp and AoEs you're meditating for tp anyway).
In a 30 minute battle, double weakness cannot be justified on rng or magic dmg really. That's mainly what I was getting at. For certain VW mobs, rng is almost a must, but if your rng(s) are double weak, wtf can you do.
Was just ranting. Thought others might agree that at this point in the game, double weak on rng is a significant hindrance to which melee DDs have no equivalent. (Yes, I'm saying slow+100% is not even close to doing 0 dmg).