While Camate is busy on something right now, I'm gonna jump in to what looks like his territory and update you even further with a reply from Hiroshi Minagawa regarding control settings:

Quote Originally Posted by Hiroshi_Minagawa View Post
It’s currently possible to switch between auto-run, auto-target, and mouse mode settings via the gamepad on the PS3, but could you make it so these switches can be enabled or disabled in the system configuration?
Hello

Currently the auto-target feature can already be disabled.
Character configuration > Control settings > Target tab
Target Settings
[■] Enable auto-target when no target is specified.
By turning the above feature off, even if you are attacked by an enemy you will no longer target them automatically.

In regards to controls where you press buttons while pressing the support button (L1), we will be introducing some features that will allow you to customize the enable/disable settings after patch 2.2.

*The feature that will allow you to customize the allocation of controls for the L3 and L3 buttons will be addressed in patch 2.1.