I really don't see the problem. In your action you select your type tool, type your text, use layer style to do a bevel and emboss and lower opacity (or whatever style is needed), select background, link text layer to background, go to Layer > Align Linked and choose from one of the 3 horizontal positions, repeat Layer > Align Linked and choose from your 3 vertical positions. If you don't like any of the 9 positions, you can pick one that is close to where you want it then unlink the text, select the text layer, choose the Move Tool and use arrow keys to move up/down/left/right. All can be done in the action and more. I did a sample batch automation of 12 images and had no problem.