you can Aoe from Keyclone by setting a pass mouse click hotkey in setup. and have the abillity on shareded keys. It seems to work ok but you seem to be only able to AOE from the same class toons eg. All druids. I tryed it to Mage AOE while on my Pally and it doesn't seem to work. but i sould get it to AOE if on both mages. Make sure you have the views on them set to the same so that the targeting will be close.

Here is another good post on the subject.

A neat macro to easly cast ground targeted spells (hurricane,treants,blizzard etc)