I am optimistic that this Endwalker delay to Dec 3/Dec 7 will include Dark Knight updates to address the concerns repeatedly raised here:

"Due to overwhelming user Feedback about the underwhelming Dark Knight changes and ongoing concerns, we are replacing Enhanced Unmend with Enhanced Salt & Darkness: Each use of Salt and Darkness will reduce cooldown of Abyssal Drain by 5 seconds. We believe this will address the HP Sustain concerns. In Addition, Blood Weapon will remain unchanged 10 (9)s duration. Thank You!"