I actually did something similar for one of our clients - you can apply additional puppet on the face (in Portrait), which is then overlayed with displacement map so whatever you do with the puppets is then animated with displacement. It adds extra movement but can be quite fiddly to set up. Perhaps a better solution would be to have puppets applied AFTER the displacement animation. Not sure if this can be done right now, but it’s definitely something we would want to add to Photomotion down the line.