Ok, so I had an idea for an ability redesign for elemental shamans that would make them more fun and interesting.
Captured lightning
Your Earth shock generates a charge of captured lightning.
Lightning bolt has a 30% chance to generate a charge of captured lightning.
Stormkeeper generates 2 charges of captured lightning.
Captured lightning would stack up to 5 times. It causes your next lightning bolt to be instant cast, and reduces the gcd time by 50% if you use lightning bolt. Actually getting to 5 stacks of captured lightning is a bit difficult, because you need maelstrom to use earth shocks, and lightning is the source of maelstrom, and it also burns captured lightning. Normally, people would get to 3 stacks after using earth shock and then using stormkeeper.