Healing Power
Stacking healing power and toughness is very effective. One without the other is lackluster, but combined they’re rather overpowered.
we may consider whether or not there is an incarnation of [ele] that would be viable
but balanced. For now, we do not expect it to see serious use.” – ANet
I assume you’re talking about this for PvE because you could easily try the stat combos in PvP yourself.
The first exotic gear I got for my ele was predominately cleric’s gear. I was running around with 1k+ healing power. I can safely say that high healing power is rewarding on an elementalist. When I had my cleric’s gear, I didn’t even touch glyph of elemental harmony. You can attune to water twice in the time most main heals take to cooldown. Healing ripple will heal for around 2300 (very rough estimate) at 1k healing power. Using it twice would be 4600 which rivals main healing skills. Once you factor in soothing mist and the regeneration boon, it isn’t even a contest. Obviously, there are still the weapon skills that heal and evasive arcana to factor in.
However, I would not recommend going that deep, 1k+, into healing power. You just give up so much in terms of damage and health to get truly absurd healing. I think base healing power(before a sigil of life) should not be higher than 500-700. You can still use a sigil of life to get stronger heals, and a sigil shouldn’t hurt your damage and health as much as using all or predominately cleric’s gear.