While the amount and sophistication of AI tools has taken a sharp upward turn, there's one particular type of tool I tried to find but failed: one that would change the facial expression in a photograph or other still image. I found some toy-like phone apps with very limited sets. The best more professional tool I was able to find was Photoshop's neural filters. They were introduced already a couple of years ago, so one would think more advanced specialized tools for this purpose would exist already. Are there such tools? Did my google-fu just fail?