We need an option to drop AOE's below a selected target.

[Marcus]

I think OP uses keyboard as if it is a controller. Yikes... I play with keyboard + mouse, and for me that's no issue, especially because sometimes AoE placement isn't always optimal under our current target, but I can see why it would be a nice tool for those who plays with a controller (or OP's case... ._.), because using control stick to place it is a bit sluggish (at least for me, I played the PS3 version quite a bit).
EDIT: just to clarify: I think OP uses keyboard FFXI style. WASD to walk and arrows to control the camera.