I had a 53 e/s troller on live, and in my opinion, it's not a solo class. The amount of stupid damage enhancements you'll have to use for real clearing is just counterintuitive. Earth /storm is crowd control. It's what they're best at, and when you mod it that way, it makes groups boring because everything is stunned, immobilized, held, or flopping around like a fish.
Ridiculous CC, terrible damage.