I also use a mouse + keyboard for this game, where i move with WASD and control the camera with the mouse (by pressing and holding the right mouse button). I've taught myself back in 2.0 to keep the right mouse button pressed 95% of the time as i'm traveling through the world or during battle. Next to that, i have the "Auto face target" option turned on. This will automatically have me face my target when i press an action.

This is a pretty unpopular setting too, because if you run away from your target and use an action, you will automatically turn around and attack. However, by wiggling the mouse (while keeping the right mouse button pressed), you would turn back around again.

The main reason why i didn't turn that option off, had to do with the issue that i would have to manually face the target in order to be able to attack it. It was more of a hassle during things like looking away for gaze attacks (just before the "hit" would register), then wiggle the camera and still being able to attack the target.