The second part of casting is not to toggle AoE, but to choose the target for the ability. You can select a different target than your locked on target, and also toggle with Z if you want AoE. Even other classes (that can't AoE) have the same selection.
The functionality is fine.
edit, sorry for the banter, this Z issue aswell as the camera/action bar bug have equally been my #1 gripes since beta.
just because its working as intended doesnt mean its a "fine" system. the system is horrible, clunky, and isnt used anywhere else in existance because of those reasons. there is nothing wrong with baing able to turn AOE off and have it stay off
until you hit Z again (or whichever key).
being able to select a different target after selecting that spell is the same as asking "are you sure", YES IM @#%^ING SURE FOR THE 1000TH TIME.
ive heard some people say "well i might forget its off and mess things up" well then i guess thats a question of skill isnt it? a good player wont forget its off (no ones perfect)
or how about we have it like FFXI and every other MMO ever made where you have AOE abilities and you have SOLO abilities, this way there is no confusion and the monotony of having to press Z every. friggin. time. is no longer there, you hit the ability and thats it. much faster that way. Edited, May 25th 2011 12:29am by pixelpop