Yo dawg I heard you liked AoE so we gave you AoE with your AoE so you can AoE while you AoE!

(Still has worse AoE than DRK...)

But yeah, Flash being incorporated into Total Eclipse makes sense especially in ShB after TP is gone so there's not even the fringe case of them using 2 different resources to justify their existence.

Circle of Scorn is different though, because it's an oGCD so it gets used even against single targets because it has no cost associated with it. Though, I could totally see it getting Flash's blind and just replacing Flash with Total Eclipse completely (Including the level at which it is learned so that PLD has a damaging AoE at the same level as WAR and DRK)

That said, technically, DRK has 5 AoE skills (Unleash, Dark Passenger, Abyssal Drain, Salted Earth and Quietus). It's just that most of these are oGCD's or have alternate effects/CD's to make them more justifiable.

PLD's issue is Flash and Total Eclipse fill the same role, which is spammable AoE just arbitrarily one has the enmity boost on and the other has the damage. (Though, it's similar thing for DRK with Unleash/Abyssal Drain where both have enmity boost just one does more damage and can also be used to gain life. While being TAoE instead of PBAoE...)

On a completely unrelated note... I kind of wish WAR had an AoE that could generate Beast Gauge so as to be able to build up for Steel Cyclone/Decimate while AoEing rather than having to decide between Overpower spam for AoE damage/enmity or ST combo's for gauge to use these AoE spenders...