If there are any fixes needed to the job, I suppose blood weapon could have a 5% increase in damage added along with the 10% increase in attack speed. Also, Abyssal Drain could have it's potency increased from 120 to 150.
Plunge could have a effect added to it where you are healed for 100% of damage done. Carve and Spit could have an effect added to it where if you don't use dark arts you get a 600 potency heal along with the mp recovery and the 100 potency attack.
Otherwise the job is sweet as you can heal up nicely with soul eater.