We're barred from server first Turn 4 because..

[Yenn]

Our main tank is a Warrior.

Is there any plan to fix this before 2.1? We're having to wait for him to level his PLD, so we can continue.

[Comfy]

do you have 2 warriors or something

[Anilogas]

turn 4, 1 day of serious attempts with a pally we downed it. we used 2 warriors for a couple days, jus not possible. 1 pally 1 warrior, turn 4 down in like 10 attempts

[Yenn]

do you have 2 warriors or something

We have one Warrior, but he can't tank Dreadnaughts because they can potentially one shot him if he gets bad RNG. He's in full Darklight, with Relic.
Even tanking the Knight + Soldier, he can still get a bad RNG chain and lose 80% of his health near instantly.

It's hard for healers to deal with it, because the damage he takes is inconsistent.

[BadRNG]

Unfortunately, I would not expect any real balance/class changes until 2.1, and at that point you will have crystal tower which you're supposed to be doing before coil. (Remember full DL would actually be undergeared for coil's recommended level).

[Zeigus]

The first time we cleared turn 4 was with a warrior. The PLD was tanking the two dreadnoughts and the warrior tanked the adds in the back.

[Inosaska]

The first time we cleared turn 4 was with a warrior. The PLD was tanking the two dreadnoughts and the warrior tanked the adds in the back.

I think you missed the point of the post as it cannot be done with a main warrior tank and requires a PLD to tank the dreadnaughts. Get to turn 5 then you will see why everyone brings double PLD for the fight.