For the fellow DRKs out there..

[Xenosan]

For the future I think some synergy could come from giving PLD a oGCD WS with a Blunt Resistance Down debuff that works for 100% uptime. (maybe the WS itself is considered blunt damage, like a Flat Blade, Pommel Strike, etc). MNK + PLD + DRK could drop Dragon Kick for Bootshine, PLD + WAR + MNK could as well if feeling edgy.

PLD: add a significant Magical attack to their kit, and DRK a debuff increasing target's magical crit chance+ temporarily. There's some synergy..or rather a perk that WAR doesn't benefit from..

DPS+ utility should be WAR's bag - and I think they should have other abilities that increase raid DPS as well (like Warcry evantually), but that doesn't mean they should hold a monopoly on it. The fact EYE is 100% uptime (and the reality the next tank is likely SAM, so another slashing weapon), should be an advantage over PLD/DRK DPS+ utility options, but that doesn't mean PLD/DRK shouldn't have any period, imo.