I would like to see something along the lines of:
Storm Surge
Instant
Functions as Earth Shock with Fulmination but deals damage to all enemy targets within X range of your current target.
Thematically Storm Surge could be glyphed to be a Wildfire, Microburst, or Hailstorm. All are potential storm events and would allow Ele shamans to alter their flavor a bit.
Edit: I was a little inebriated after helping a friend move yesterday, this is a simpler and more elegant idea based on current mechanics.