I really don't want scourge back. People keep screaming at homogeneity yet they they all want to have the same mechanic-less skills that have no deepness and are just here to be smashed every X secs.
I'm not saying DRK doesn't need a dps boost, but bringing back scourge isn't the solution imo. Every job doesn't need a DoT, that was one thing that made me mad in HW, every job had this one stupid DoT they had to keep on which had no interaction with any other skill (expect BLM with Thundercloud).
Same goes for healers, I don't see why the 3 healers need a DoT, or more specifically, I don't see why Astro has one.

They could simply increase some potency and that'd do the trick without incorporating another useless skill.