learning how to set up cross cc helps
the problem is shadowpriests, they have powerful heals at little to no resourse cost, amazing control, which blizz can't really change with out screwing disc over, and very good damage with both the capacity to burst and deal spread pressure.
they really have no weaknesses.
blizz should go in a specifically look at shadow's mechanics instead of screwing over all the hybrids, many of whom are not really overpowered in anyway.
tweak pvp power specifically for priests, raise the mana costs of their offspec spells, make their heals cost shadow orbs, these are all better ways to fix their hybrid healing with out gutting ret and enhance.