Introduce a new feature to stop users from saving new documents inadvertently to Local storage. As the user creates a new file with sensitive data there is a high chance that they will save it to "IPad" instead of SharePoint or other corporate location. If the device is lost or stolen the file can be lost or access by a malicious party.
Currently the only solution is a user have to save the document first on a corporate location e.g. one drive for business or share point in order to prevent it from saving on a local storage.