Im a gamer who loves a challenge. I dont scoff at hard difficulty in games, but in an MMO such as FFXIV difficult dungeons/bosses present a unique problem.

Eight people doing something correctly together, coordinating together is very time consuming, and just feels frustrating. If one key role dies such as a healer or tank, the fight goes sour. If someone misses a AOE dodge or does not know the fight it becomes a problem. This is the primary concern of the Duty finder in endgame.

Ive done the whole teamwork thing. Im in a FC, ran COIL turn 1 and 2 using mumble/teamspeak, use linkshells for good groups, etc but it just comes off as frustrating. Spending up to an hour trying to get people on to do the content, and then the content you attempt is just riddled with tons of mechanics to all be familiar with. All 8 players mind you to perform perfectly.