I wonder if they are going to make the queue "blind" like with the Duty Finder Roulette. Otherwise it would still be easy for a tank to withdraw from queue upon noticing that there are numbers adding up to 24. In the case that a party member leaves a duty from a Full Party, even if joined in progress, I always thought there was a penalty unless the entire group was pre-made. Guess I'll find out if it is now that way or not by experimenting tonight.
Healing. Definitely the toughest job.
Tanking is only hard to learn for any dungeon or fight the first time around, IMO (I still get tons of anxiety even thinking about tanking fights I've never tanked, e.g. ex primals). When learning, you need to really pay attention to all of the specific positioning for each phase, know when to dodge and when hard-hitting attacks are coming around. Seeing the correct positioning in a video or guide, and leading the mob to the correct position during a run, are often quite different. Especially since you need to build aggro to guide a mob in the first place to get it to follow you.
Healers and tanks share these growing pains, but the difference is that tanks only need to change up their ideal routine whenever bad stuff goes down. Once a tank knows a fight, from then on his job is smooth sailing, par for the course, and any another other phrase synonymous with "routine". Whereas healers are always reactive, since they are responsible for 4-8+ party members that have some of the strangest interactions with enemies.
Therefore, my vote also goes to the healers. Without you my Warrior would have been a forgotten memory.
Edit: oh yeah, and there are a ton of Healer intensive/punishing fights in this game. But I suppose that is the only way aside from instant death, other than a dps check, to punish dps for not dodging consistently: take it out on the healers' healing. I'm sure there are other ways to make the dps role more directly challenging (hence why I like Qarn so much). I just feel bad for the healers on some fights. Edited, Jan 21st 2014 1:21pm by fatpolomanjr