I've come up with my PvE builds for my elementalist using pure fire, pure water, and pure air, but I've yet to come up with something effective for earth (haven't bought many earth skills as a result of this).
With fire I use Searing Flames with the standard Glowing Gaze, GoLE, etc.
With water I use Deep Freeze+Maelstrom along with Blurred Vision and Shatterstone
With Air I use either a Dual Attunement Orb+Hammer or Invoke Lightning+Chain Lightning
With Earth, well... I have a lot of Dmg/Sec skills that make monsters run all over the place. I have yet to try PBAoE using tanking skills, but that would probably yield the same effect. Should i just go for wards? Ward against Foes can work for AoE Dmg/Sec but it isnt as good as Deep Freeze. My only Earth elite is Sandstorm... should I use Shockwave? What kind of Earth builds are running now to help out in PvE?
(Note: I have all 3 campaigns and access to any skills)