I'm not sure how difficult Qarn was before, but I do know that a lot of tanks don't like that place since attentive DPS is still required to keep him/her alive, especially if using DF. I just did about 5 runs there, and had no difficulty queueing as healer or dps, and in each of those runs, there was at least one person doing it for the first time. Also remember that Qarn is an optional dungeon outside the MSQ. You actually have to WANT to go there lol. Unless of course you unlocked it by mere happenstance and catch it in roulette haha!

But I wouldn't worry about it too much. Get some FC mates to go with you if queue time is just ridiculous. Having a tank go in with you will shorten the time dramatically.