I think most of the arguments have been made here, I won't respond to anything in particular, but I will add a small followup experience I had from last night.

Even after I was flustered on my healer from the previous DF Roulette experience, I was still pretty short on myth tomes for the week, and the Roulette 40+ reward is quite nice, so sometime late last night I decided to requeue and try to get it done for the day (even though I was strongly considering boycotting DF).

So, I queue up on my WHM who is lvl 85 with +1 relic, and I get a 0/3 in progress dungeon queue immediately. I accept the offer, and notice it was Amdapor Keep and that only the very first pack of mobs have been killed in the instance, so it was basically a fresh run. I was greeted with the "hello, our previous healer just left, we don't know why didn't give a reason." Hmm, ok, I inspect the party, the SMN is fresh 50 with some lvl 29 rings and quest gear/GC weapon. The BRD is mostly HQ crafted gear, including the 70 crafted bow, and I don't think any item from dungeon to give any hint they have some dungeons before. The WAR was about 5000 HP, and had some Darklight pieces. So, I was thinking to myself, I know why the healer left, because this run has a very low probability of completion. So, we continue in, I don't say anything yet but am really doubting if the group can make it past the Demon Wall (DPS check). Clear to first boss, ok no wipes, other than each pull going verrry slow. First boss, I help to DPS at first, then switch to healing 100% once party starts taking damage. Fight is going verrrrry slow, after about 3 minutes, and boss like 30% or something, a big red zone takes out 2 players and its a wipe. Tank apologizes for getting hit, we run back, and second try, same thing about 3 minutes in 1 or 2 dps get hit and die, at this point me and the tank slowly whittle away the boss and barely get a kill. Woohoo! On to Demon Wall...

So, clearing trash to demon wall, the mobs are attacking me as a healer (healing aggro) quite often, I don't say anything to the tank because I have learned a lesson on trying to tell people how to play or what to do, doesn't go over well usually. So I just heal through it, which was perfectly doable just a little odd. Get to Demon Wall, I am nervous. After starting the encounter, it is apparent the BRD has no idea the mechanics, since he just sits in the middle and doesn't avoid anything. Get to about 35% HP, bees spawn, tank goes off the edge, its a wipe. 2nd try, get back, I say something like "does anyone have any questions about this?" (I was hinting at the BRD since he got hit by everything), no on says anything, we go again. Same BRD getting hit by everything, SMN getting hit by about half things, tank goes off the edge again, wipe. 3rd time, tank doesn't go off, dps getting hit by everything, once the bees spawn the wall is still like 35%, we get overrun. DPS is low, I am parsing and tank is doing 2nd place DPS, 4th attempt again, low dps, people go flying off ...

So after spawn, I have already spent like 30+ minutes here, I see that this group is fresh 50's, never been inside, the tank was OK and had likely been there before since he had at least 3 pieces of darklight, but got hit by a lot of things. So I say in chat "This group isn't happening, can anybody step out so we can get a clear?" No one answers, I was hoping 1 of the 2 new DPS would step out and we would get a replacement who was much better and could carry the DPS. All 4 of us sit an entrance for a few minutes, then tank drops (which I was a bit sad about, since I was hoping the DPS would drop, the tank was OK just I think he felt bad that he got knocked off a lot, even tho the DPS was rly bad and we wouldn't have killed it anyways). So tank drops, and we get a new tank replacement, this tank is much better item, like relic and 5500 health PLD or so, a few darklights, and he was cheerful and said like "lets give it a go!" So we head back, and tank is like top DPS on Demon Wall, DPS getting hti by everything, low dps, SMN goes flying off the edge, bees come, Wall gets closer, we all die ... SMN immediately drops group (he may have been embarassed), I Will give him credit he could play his class fairly well from what I saw. He had a good SMN rotation up and knew his stuff, it was just he said he literally just hit 50 that same day and had pink dungeon items on from 20's/30's/40's. Can't blame him ... so we wait again, we have 3 in the group, the new OK PLD, the old BRD and me ... I think the BRD is party leader and is not clicking the 'replace party member?' button. Time is ticking down, gets to about 16 minutes left total in the dungeon, we are sitting at entrance as 3, then the BRD drops (finally!), I am party lead. Immediately I replenish ranks, and we get like a 4300 HP DRG and 4000 HP BRD. Yes! We can maybe clear this! I tell him "Its possible to clear the dungeon, everyone needs to hurry and not make any mistakes!"

So we sprint to Demon Wall, buff up, kill it before bees spawn ... continue to the rest of the instance. The tank is pulling a lot, but we have to since time is low. A few close calls, but we make it to final boss with no wipes (about 8 minutes left at this point). We kill final boss, with a few minutes to spare! everyone is happy, DPS is happy they got quick myth tomes (full run in like 10 minutes). I am happy since my entire run wasn't wasted (again). Tank is happy too for a quick run.

So, that was my run. I felt bad, but it became apparent at the time, the members were too new, and we could either continue dying for the rest of the 90 minutes on Demon Wall since it was very unlikely we would kill it, or I could tell the group "Look, we gave it some nice tries, but this group can't progress any further. Would you mind dropping so we can replace and try to get a clear?" Keep in mind I never insulted anyone, or vote kicked anyone. People who left did so voluntarily after we tried a lot. I felt bad for those people, but we had to go on without them, but as a healer there was little I could do to progress the instance any further besides just healing (and DPS when I was free).

So that is my DF experience for last night. Also, I should note, this morning I also queued DF Roulette on my healer again, and guess what I got??? Pharos Sirus. Thankfully, I recognized one of the other party members as a DRG from my server who I have PF with. Who is almost full 90 and very good. The group was way overgeared for the instance, so we did it and 1 shotted everything. However I have to admit, at the dungeon entrance, if I didn't have high confidence in the party I may have left at the beginning and take the 30 min debuff and just make a WP group.