By giving direction and distance, a sharpening algorithm could reduce motion blur. (Usable with mask, not all over the picture). BTW, the brush to create the masks needs some softer settings, it is to harsh even when using the softest settings.
There are at least two distinct needs:
- Remove camera shake blur
- Remove subject motion blur (a) for all subjects, or (b) for some of the sublects identified by a mask or otherwise