Coils of Bahamut... and its inconsistent challenge level.

[aleph_null]

It made PUGs wipe because they ignored mechanics - not killing adds and other, very simple stuff. It wasnt actually difficult - it simply required you to pay a bit of attention to the content and the mechanics.

That's precisely my point, if a lot of pugs wipe due to whatever mechanics/dps check/heal check/positioning/anything that matters, it'll be bothersome to do the roulettes everyday unless you run with a premade party. I like challenging contents, I want harder ex/savage contents, but harder expert roulette (with pugs) is the last thing I want lol.

The vault is nowhere near as hard as Pharos Sirius was, and even then it was only really one boss that got nerfed (the first one). The problem with the boss is that he hit hard, and the strategy wasn't all that clearly telegraphed, which led to wipes frequently. This was a design problem, not a difficulty problem, but the motivation of the devs was still the same. The vault is a different story, wipes are not that frequent, but the dungeon is demanding on all players, and actually feels like what you would expect from an endgame dungeon (see also: Aurum vale/Amdapor Keep pre nerf/Wanderers Palace)

I see, I only ran vault a few times a long time ago so I can't really recall much of it. I do remember moving the boss to dodge the knights at one of the bosses though. Aurum vale didn't strike me as a hard dungeon (it is kinda long and takes a while to clear, but not really hard), but probably because I'm usually the tank so it's less risk of wiping at the second boss (dodging cleaves and circular aoe). Ironically what aurum vale taught me the most was carefully pulling mobs so you won't lure too many, which is kinda useless in every other dungeon/trial/raid in the game lol.

Anyway let's stop here, we're getting too far out of topic.