I consider my self as an experienced shaman
Playing since they came out shamans. totally focused on shamans
At corey spirits cant annihilate under normal conditions, if u prim fury, bash, etc on trash mobs then yes, corpses and mage charmies do oblits
Shaman can heal but cant save lives like cleric does. On critical moments cleric is needed , most trash healing a shaman yes can handle , better than a cleric or a drood, btw cultivate is a great spell.
Use cure critical and consider invest on some healing done ranks and equipment.
U guys forget that shamans have the lower hp pool in game and shamans need every single stat , too much effort at least they do some dmg
Shamans are so much buff dependant dispell/steal buffs and reconsider the dmg or healing they do. Buffs makes shamans great.
About changes on shamans imo remove legend ghostskin and control , replace them with a rank that make him a curse master and legend transmogrify something like when duration ends they become normal spirits again.