Hm, it sounds like they didn't give players the DKs skills from tactics.
The "sanguine sword ()" technique would be really helpful as one of it's early level skills, and something that would work like a brds song skills that would give him 50% atck -50% def buff so you could give them an ???% x dmg= mp absorbtion skill like infernal Strike. It would fit in better with the combat system for ARR, imo.