I get that--it fills what merits the Devs seem to desire from it, if nothing else--and I too would have liked to simply heard something one way or the other from the Dev team to confirm their direction. It just seems a bit like a double-standard to have taken the option of focusing on eHP vs. damage dealt mostly away from tanks (for better or likely worse, parry is still a community running joke, so there's some negotiation there), but then have healers either sink secondary stats into improving Rain of Death dps (up to Barded-cap) and their heals... or simply improve no-Rain dps. Worse, it makes a weird balance between WHM and AST/SCH parity due to the presence or lack of direct damage (and thereby accuracy requirements) on DoTs. It just leaves a slight twinge of regret and faint confusion. Especially when messing with the damage-increasing multiplier itself would have the same effect...
...apart from starting off at a lower place and gradually scaling higher compared to others as raid tiers demand more accuracy...
...which leads me back to the textwall I placed earlier. I really don't like accuracy as it currently is. I mean, I would... it were more than just a gearing consideration and a raid dps diminisher... But... /sigh.