I'll keep it really simple then.
Question: When you have your Flame Shock dot ticking below 6 seconds, with nothing else of usage other than your shock abilites.
Facts: Flame Shock - Flame Shock dot ticks for FULL duration > Earth Shock ||| Earth Shock > Flame Shock - Flame Shock dot that DO NOT tick for full duration.
1. Will you just apply a new Flame Shock even tho it's still ~5|4 seconds left on Flame Shock dot?
2. Will you cast Earth Shock?
3. Wait for another ability such as Stormstrike, Lava Lash or Fire Nova to wait for the Flame Shock dot to tick off completely before applying Flame Shock?