This isn't meant to be generalized to everyone, but sometimes the reason DF groups fail is because the experienced players just don't explain things well enough.
Yes, yes there are people who don't listen. There are also people who act like they listen, and then fail at the same thing over and over again. Honestly, I don't encounter too much of this.
My little brother wants to get the coil experience before Heavensward comes out and no one runs the content anymore. He is a huge final fantasy fan, and a good player, but has been stuck on Turn 5 (he only started playing a few months ago). He has a crazy work schedule so I don't get to see him too often, but this weekend I was able to group with him and I queued with him into Turn 5 in the duty finder while we were in a PSN party chat. I told him not to expect a win, but hopefully with some direction he would get to see most of the fight and begin learning it.
We queued in almost instantly (both as DPS, at about 12am CST....I was shocked..). Immediately I began inspecting people, and before I could get very far, 5 people (not including my brother) said it was their first time. No one had watched any videos. The one paladin who had beat it had some High Allagan gear, but no Dreadwyrm. I was the lone FCoB inhabitant.
The paladin was in voice chat with his friend, the warrior. So I left tanking mechanics out of my explanation. I broke the fight down into sections.
Healer-specific: Watch out for Death Sentence and Plummets. With Echo they won't kill the tanks if they don't mitigate, but they can still potentially take a ton of damage. Keep them alive! Raid AOE is pretty straight forward, but if everyone follows the mechanics there shouldn't be a ton of damage going out to anyone other than the tanks.
- Kill trash, then focus twintania. At 85% the MT will re-position Twintania to a different section of the arena. (We had no SMN and no SCH, so I acted as the "pet" for fireball soak since I had over 8k HP with echo and OT and I could soak alone if needed)
If you get a blue icon over your head, position it directly under Twintania. Anyone not caught inside of it needs to DPS the conflagration to break the person out.
If you get a red icon over your head, run it to the Chains #1 and Chains #2 people to split the damage. If there is a Conflagration on the ground and you have a red icon over your head, run it INTO the Conflagration.
1st attempt made it to divebombs. - i called out Pit in chat log for people at 54% so they knew when to stack
- Focus target Twintania from here on out. Position yourself in this Pit, as close to the wall as possible without killing yourself.
When you see a Green Icon, run out of the Pit to this spot, then immediately run back into the Pit. Repeat 2 more times.
DPS the small snakes until dead, then DPS the big snake until we have 3 more divebombs (we had plenty of DPS for the big snake to die without having 4 stacks). Repeat step 2.
Once all snakes are dead, stand in the 2nd necklace that dropped. (again, I left out tank instructions due to the PLD helping his friend in voice chat)
2nd attempt made it to twisters.
- Everyone needs to spread out and try to be as far away from the middle of the arena as possible.
When you see Twister on the cast bar, run in small circles that do not intersect with one of your partners, and DO NOT retrace your own steps while running.
When a dreadknight spawns in the middle, kill it ASAP.
Watch out for a Twister cast bar to happen DURING a dreadknight spawn. Don't tunnel your DPS! Mechanics are more important, we have the Echo on our side.
3rd attempt, Twisters not done properly. 4th attempt - Twisters messed up by one healer that killed the MT. PLD picked up Twin and we pushed to Hatch phase, but he dies eating Hatches because the other healer wasn't ready for the amount of damage the PLD was taking with Death Sentence/Hatch.
- Healer, lots of damage goes out on Tanks in final phase, be sure to keep them alive!
If you get targeted with Liquid Firex5, run to the outer edge of the arena and try to place them away from everyone in the group.
5th attempt - Twintania dies and I watch 6 people get their achievement for beating Turn 5 for the first time. I also get 6 commendations, because my brother and I queue together lol ^^
Yeah, I know you get the type that don't follow instructions, or troll purposely. But more often than not, what I see is..."watch a video" or "you don't know this fight? you're dumb" Maybe not everyone can type as fast as me, maybe not everyone can type at all (PSN, but bad excuse) but 10 minutes of explanation got my brother a Turn 5 kill because the people in the group did listen and did pay attention, and I like to think became better players early that morning. As far as the "communication" bit, it does go both ways, and often times I see veterans just as unwilling to help teach as I do idiots who can't learn.
Food for thought.