Editing to add - guard/taunt (especially when paired with op healers) is probably too strong. Also, op healers need resource management to enter the equation again. The skill cap for healing on an op is far too low now because we never have to consider energy unless we're being careless and rolling all around.
in which case i had rather the healing toned down to more reasonable, than the taunting/guarding,
cause toning down guard/taunts, will dumb down the game making those mechanics forgettable gimmicks and hence the classes/spe that bring those spells to the table,
healing will not be a forgettable mechanic if toned down, it has a lot of leeway for nerf.