Allow organization/project/user settings for where to store files with co-authoring mode enabled. The current behavior is a file gets copied onto the user's individual OneDrive in a temporary hidden folder and can then be shared via link to others. For clearer data residency, it would be useful if files could be managed on an organization OneDrive in a chosen location.
Co-authoring files are added to OneDrive for Business associated with that user, so the file does not leave Office365 tenant managed by the company. A centralized and and more controlled location is being considered for the future.