2D, 2.5D With Mix Of 3D Rendering (Transparency Issues)

Eric, So the way I was planning on dealing with the character facing the opposite direction was this, I have specific bones that are at the base of the eye, the brow, the hips and the arms, all I need to do is add key data those joints and push them one way or another depending on how the character was facing toward the camera.

I was thinking that this could be handled with a blueprint, if the character faces left then add this animation offset to specific bones and if the character faces right then add this animation offset to specific bones.

Do you have any advice on how that would be set up as an animation offset on those specific bones.

So when this is all working with sprites, will it be a pretty simple process to flip the character? I was watching a video on paper 2d and the person setting things up just gave a negative scale to the sprite/flipbook to have the character doing the same animations but in the other direction.