First off I have to say as a photographer I love Photoshop's Liquify face tracking tool and the neural filters. You can even import video and track someone's face and tweak certain features (nose, chin, eyes, etc) in Photoshop. I find it to be easier, quicker, and more efficient than After Effect's face tracking where it's not as straight forward and you have to set up the face tracking first. I would love if Adobe added support so like with the "Replace with After Effects Composition" feature we had a "Replace with Photoshop Composition" feature so we can track and liquify someones face in photoshop and then bring it back into Premiere.
Currently your only option is to export the Photoshop video and then import the video into premiere. This decreases video quality having to export it. Another option would be to simply port Photoshop's face tracking liquify tool and maybe some of the neural filter skin smoothening to Premiere so we don't have to go back and forth between programs (currently Photoshop does not let you use neural filters with video) Either way I think it would be a great feature to have in Premiere. Often certain lenses or barrel distortion can change someones face, it would be useful to be able to adjust people's faces back to normal in Premiere.