For the last few years or from as long as I can remember, I am having to have two styles for each action. So the most simple action I do is a Full Page bleed image box. On the outer margin it has an additional 3mm. This is set from the inner margin out. However I have to always create to styles, one for the left and page and one for the right. It would be so useful to have 'from Spine' as an option as a reference point.