if you have never been drug into a quest that was beyond your groups ability level, i envy you. I KNOW BETTER and I still go with it from time to time. Never ends well... but i have the resources/knowledge to not be running around cursed afterwards.
my guess is that this change will have NO EFFECT on anything but low level adventurers that don't have any money (ie. newbies) for potions.
/death is more expensive in healing than 1 charge of a remove curse wand... let alone XP debt.