Ability to save to specified onedrive folder.
The ability to set a default one drive folder in onedrive in settings and override this on save
Sofiane Ayoute commented
Actually I've just found that you can do it. You only have to do it VIA the OneDrive app, go to the folder of your choice and select the "+" then "scan". It's apparently the same way for Google Drive.
[Deleted User] commented
I think it could be a killer feature, being able to save to specific folders in sharepoint.