I'm prot pally FC., 19s is far more balanced than it was in Cata, much less burst, heals are massive currently.
Mana has been set to a certain amount per level.
Balance/Resto Druids, Ele/resto shaman, and holy paladins, i believe, get 550 mana whereas their melee (or feral/guardian in caster form) counterpart are 110 mana. (At 19)
All other casters are 550 mana by default. (at 19)
Balance Druids are probably the new hunter right now, can't say why but all I've heard is that their heals are what's keeping them alive.
Currently games are filled with Healers now.
Hunters lost their spot as OP, and now sit in the borderline along with the rest. They still have a majority of CCs to choose from, so they weren't gimped to be useless.
These are my thoughts and are highly debatable.