To be honest, with the way things are currently set up, it's going to be even more cursed than that right now. -15 Pre-pull Delirium so you can save that weave slot, the standard pre-pull Blood Weapon to have Living Shadow fit all of the attacks within raidbuffs at 3rd GCD, (since CnS will just barely not make it if it's on 4th GCD), the usual pre-pull TBN for the DA proc, adding an additional edge to this. If there's mitigation or any movement that needs to be done after the first 3 GCDs, it's going to be rough.
Seriously, -15 Delirium is going to be weird in pugs. But you are absolutely going to gain a usage on some killtimes, for literally zero cost to the Dark Knight, unlike WAR, where pre-pull IR ruins Infuriate and Inner Chaos.
On the bright side, Shadowbringer and Abyssal Drain can be combined together for ranged oGCD weaving spots of movement, unlike GNB's forced melee Continuation. It's no PLD Req, but silver linings, I suppose.