Yoshi-P I am not happy with what DRK has become and suggest that you take some suggestions from this thread into consideration.

(Practical and should be tested and implemented ASAP)
Delete Delerium and add its effect on BW/BP via CnS. Also buff the amount of MP restored to compensate.

Delete Dark Passenger and bring its potency to Quietus.

(Impractical but would be awesome)

Salted Earth 5% chance to inflict
Blight. Effect next Dark Arts weapon skill deals critical damage

TBN w/ Grit stays the same.
TBN w/o Grit prevents Dark Arts from falling off after one use. 10~15sec.
Blood gauge doesn\\'t refill after.