My issue is that SK DoTs don't bring anything to the table, and are pretty much useless in their current form.
My dps with straight melee:

My dps using blood of inruku and blood of discord (didn't bother with dark constriction because it was resisted 100% of the time):

As you can see, the difference isn't noticeable. My proposal is that the DoTs either have their damage increased, or their cast time lowered to .5 seconds (like our spear of disease line) so that they don't interfere with our weapon swings, which generally deal more damage and agro.
Also, our undead nuke line of spells deal less damage than our regular Spear line of nukes on top of only being castable on undead, which are few and far between. Not a pressing issue, but kind of puzzling.