So, ground target abilities can be annoying, given that for the most part you will be looking at enemies in order to sling abilities/LA/HA's at them - With particularly large enemies you might even be looking up.
Meanwhile, for ground target abilities, you need to target the ground beneath the enemy. Which can be annoying to do (Especially with those aforementioned large enemies).
As such, I suggest an option to go alongside the options for the Ground Target Range Lock and Quickcast whereby using a ground target skill while targeting an enemy will cause the skill to be placed down centred on the enemy.