Is it possible to perform GFS (Grandfather-Father-Son) backups from a MyCloudMirror to External USB drives for disaster recovery? If not, why not? Couldn’t see it in the menu selections? It would give me a warm feeling!
Your post sounds more like a good Feature Request; the best place for this, is in the Ideas Exchange section. This way someone from WD will be sure to see it and will allow more users to support your idea.
However, I would first search and make sure that there are no other active Feature Requests suggesting the same or similar improvements. If there is, then you could add your post and vote on it.