Can it be done with the bare minimum gear level they suggest? Yes. By a very skilled group of players. This means everyone has done the fight before so many times that they know the attack sequence in their sleep and is on the same page (probably with voice comm.). This also means that, of the gear they can tinker with through crafting, they have the best possible melds and also use food (not even the best).
Would you expect to find the following in a DF run? No. So why make the ilevel so low to begin with?
Doing extreme primals since the day the patch came out with Ultima in there as well, my FC, to this day, still has the occasional hiccup with Garuda and Titan. This is with people who have voice comm., are very skilled at what they do, and use the near-best possible gear that is available (with food to boot). This means we pretty much outgear the fight.
Now if we were to lower our gear to the bare minimum and attempt it, we'd have a lot more trouble and see fewer wins. Now change the situation to where you're stuck with strangers: not people you work with on a weekly basis. It just becomes a nightmare in the end.
I've been experimenting with the DF recently on old fights like Titan and Garuda HM to see if things have gotten better with the ilevel minimum requirement. The problem is, I will always go on SCH to heal these fights. You can have some of the worst players in the world yet still make it through something like Garuda HM with a SCH who severely out gears the fight. On Titan the issue becomes having at least one DPS live past heart phase to always break the healer out of gaol. If that is accomplished, the healer can also carry people through Titan HM.
The same is true for extremes and Ultima. The best bet in a DF is to set the bar a little higher. Gear can make up for lack of skill (and skill can make up for lack of gear) but since you cannot measure 'skill', gear is all we have to filter people out.
In the end, ilevel req is a good idea but was implemented incorrectly. It should be based on specific jobs not just general classes. They also should have gotten rid of two tanks on Titan HM DF. There is just no need at all.
Here is my assessment of certain fights:
Ultima
Tank - The ilevel needs to be set higher. Defractive laser can EASILY destroy tanks in ilevel 80 gear. The minimum for Ultima is so low that I often end up with tanks who have too little HP to survive the defractive and do not know how to use cooldowns properly.
DPS - The gear level right now for Ultima is fine I suppose. DPS is not really an issue in this fight: it's surviving the aetheric boom > bomb phases. If DPS die and this causes your Ultima to enrage, you can't really say it's a DPS issue.
Healer - The min. ilevel needs to be increased just a little bit. I feel that a healer with 3.6k-4k HP can survive in here just fine while performing their duties. What matters is the skill of the healer
Garuda Extreme
Tank - The ilevel requirement needs to be set MUCH higher for the MT. When I join a DF or PF and see a MT with around 6k HP, I know they are going to die to double whicked wheel if they do not manage cooldowns wisely. And most don't. Even if they do, there is still the chance they will be once shot by double whicked even with virus, soil, and eye for an eye on.
Healer - The ilevel is not high enough for healers. All non-tank classes need around 4k HP to be comfortable in here during a DF run. Melee, especially, need to have high HP because this is not a friendly fight for melee.
DPS - The ilevel needs to be increased substantially for DPS. Most groups cannot down Suparna or Chirada before she uses aerial blast. This points to a weakness in the fight mechanics, actually. This fight, as mentioned before, encourages ranged stacking.
Titan Extreme
Tank, Healer, and DPS - All three roles need HUGE increases in the ilevel minimum to enter this fight. If you do not have 4k+ HP, you're probably going to die unless you get stoneskinned or use fey covenant on geocrushes. Everyone must have flawless execution during the pre-heart death phase. You are allowed to let one DPS die during post heart and will still be successful (if you outgear it). Otherwise, you're SoL. In other words, the ilevel minimum to enter this fight needs to be raised like I said.
Of interest, Titan Ex is actually pretty friendly for melee classes unlike Garuda.
Ifrit Extreme
Tank - ilevel needs to be set a little higher. Tanks need to have good communication...something you won't find in DF. This fight is a nightmare to heal through as well.
Healer - ilevel needs to be set a little higher for this fight since the major mechanic in this fight centers around the healers switching off howls AND the tanks switching off stacks.
DPS - the ilevel is just a little low for this fight. DPS should have no issue here (melee or not)
Good tanks and good DPS are a great thing to have on extremes, but healers are what make or break you. At least, this is from my personal experience as a BLM/SCH who does these fights regularly.
Now on other dungeons like Pharos, Copperbell, etc, I would not know. PUGs seem to have no trouble with HM HM. Copperbell is a little trying but once everyone understands the tactics, it isn't that big of an issue. Pharos could use a higher ilevel requirement for the healer and that's it. DPS and tanking isn't as important.
Edited, Dec 28th 2013 8:56pm by HitomeOfBismarck