So as I was looking into facial mocap, it appears Brekel is the only reliable / inexpensive solution for facial mocap. As always, there is an issue with getting data from Brekel to Blender. Someone wrote an add-on, but I am not sure if they maintain it.
Another solution would be importing FBX file, Brekel saves. Is it possible? I know we have FBX exporter, but do we have FBX importer, and if not, are there any plans?