I really hope spirits get some attention soon as well. I am pretty stubborn and trying my best to make a spirit build work, but it is pretty painful to say the least.
Moving spirits needs to be either default or moved down to an earlier bracket, as it limits there effective use to level 60. Aoe. immunity or at least a significant dmg. reduction.
I love the idea to change the activated ability to a combo field, and like this posters idea of reworking their buffs:
Sun spirit – Randomly gives Might for 3secs and randomly burns foes for 3 secs
Ice spirit – Regeneration and chilled
Lightning spirit – Swiftness and blinds
Earth spirit – Toughness and bleed.