So...about Arcanist

[Nyalia]

What about a conjurer signing as healer for the harder content? Or any level 50, with the way everyone likes to speed run. The conjurer would have zero cooldowns to use on a pull. That's no different from an arcanist signing as healer, and its currently possible to do.

I disagree with this statement. ACNs have no healing skills beyond Physick and Resurrection, even at 50. CNJs have plenty of healing skills beyond Cure - Esuna, Raise, Medica, Cure 2, aspected Stoneskin, Cure 3, Medica 2. The only healing skills (not counting CDs) a CNJ would lose are Regen and Benediction. While those two are very useful, you can't say that a CNJ at 50 is "the same" as an ACN at 50 as far as healing ability goes. Plus, there's the gear thing - ACNs at 50 cannot wear endgame healer gear. CNJs at 50 can. Gear does matter.

Before level 30 THM/ACN can easily heal dungeons, so I too find it odd that they can't queue as healer for said dungeons.
Trolling higher level content is easily prevented by only having the option to sign as healer for <30 content.

I'd guess the reason it's prevented is simply consistency, especially around level 30. Allowing an SCH-to-be to queue as a healer at 29 brings up the weirdness of leveling to 30 while in the dungeon and how the game handles it. And then what about ACNs who queue at 29 and then level to 30 before their duty pops? Sure, there are solutions to these things, but the more complex the situation, the more coding is required. Personally, I don't think the benefit outweighs the cost. And, again, SCHs have fairies that make them just as good as CNJs at healing low level content. Without the fairy, they're much worse, but that's why they have the fairy. The fairy heals more than the SCH at low levels, so an ACN would have less than half the healing power of an SCH.

Which people already do anyway. I suspect over half of the DF scholars spend more time dpsing then healing, since they are well aware you can't see what they are doing.
And plenty of white mages just don't care.

Except while they are DPSing, their fairy is healing. So, they are fulfilling the healer role, even if they are dealing damage at the same time. This would not be true for an int-spec ACN. Note that Cleric Stance does not work well in reverse as it gives a healing potency penalty while active.

[Iagainsti]

I've seen some horrifying tanks pre 30 and paring an int acn with in stats would be a recipie for disaster. On your line of thought any pre 30 class could just cross class cure/physik and que as heals or cross class flash and skull sunder and que as tank (God forbid).

Skull Sunder is useless without Heavy Swing, the combo creates the Enmity of 200, you won't hold anything even spamming 100 potency.

[AskaRay]

Let's try doing a premade group with one tank, two dps, and a non-soulstone ACN in Aurum Vale.
Because that's what would happen.

[Nyalia]

Skull Sunder is useless without Heavy Swing, the combo creates the Enmity of 200, you won't hold anything even spamming 100 potency.

Not that you're wrong, but I wanted to point out that Skull Sunder has its 3.5x enmity multiplier even when used out of combo. So, even though it's a 100 potency attack out of combo, it still does 350 potency worth of enmity generation. That's almost as much as a non-ranged tomahawk (tomahawk is 390 enmity potency). In the very early dungeons, before you get Butcher's Block, a MRD spamming Skull Sunder is almost as effective at holding aggro as one that uses Heavy Swing -> Skull Sunder (average enmity of pure Skull Sunder: 350, average enmity of 1-2 combo: 425).

So, you could totally tank as an LNC in, say, Sastasha normal by cross-classing Skull Sunder and Flash. Should you? Probably not. But could you? Yes. This is the point people are making - it's the same argument as an ACN healing. And would you want that LNC to tank Aurum Vale? Yes, because it'd be hilarious No, absolutely not.

[Iagainsti]

Not that you're wrong, but I wanted to point out that Skull Sunder has its 3.5x enmity multiplier even when used out of combo. So, even though it's a 100 potency attack out of combo, it still does 350 potency worth of enmity generation. That's almost as much as a non-ranged tomahawk (tomahawk is 390 enmity potency). In the very early dungeons, before you get Butcher's Block, a MRD spamming Skull Sunder is almost as effective at holding aggro as one that uses Heavy Swing -> Skull Sunder (average enmity of pure Skull Sunder: 350, average enmity of 1-2 combo: 425).

Had to look that up, thanks for the info, I did not know that the enmity was 350 potency str8 up.

[Nyalia]

Had to look that up, thanks for the info, I did not know that the enmity was 350 potency str8 up.

There is some disagreement on whether the enmity multiplier for Skull Sunder is 3.5x or 3x. Either way, you can totally hold aggro with it as a cross-class skill....... in Sastasha (Normal) (and likely the other early dungeons as well, up through Toto-rak).