It sounds like only dedicated healer classes (as in, spec'd into the holy/resto line) will have the full line of decurses for the class.

It might mean, moving from a 3x Elemental (that can heal) towards a 1x dedicated healer (spec'd to heal) per team. That just means a little less dps on the trash, unless you go with a dual-spec on the healer.

It is always hard to balance both PvE and PvP. Since the dispels are getting harder, and will punish (in terms of mana) dispelling when its not needed, and the ongoing dispel type effects (totems, abolish disease/poison) are going away, this is meant to be a skill required of the healer types.

We might need to change a few teams.

But as others have said, perhaps the debuffs which we are currently cleansing/curing won't be as dramatic. For all we know, a decurse might cost as much as 3 large heals but render the target immune for 10 seconds. We don't have the details yet to make an informed judgement.