Ability to sync shared folders to my OneDrive desktop client.
This feature is a bare essential for business use.
Michael Mardahl commented
I might have a part or a whole solution for this. I have created a login script that will add libraries from sharepoint online (specifically unified groups) - to the users OneDrive. https://www.iphase.dk/auto-mapping-office-365-group-drives-with-onedrive/