Ask: Make Backstage-New and the Office Welcome screen extensible so that add-ins like the officeatwork Template Chooser can serve custom organizational templates to users. Currently, a new empty document is created before an extensibility surface can be presented to the users. This for instance leads to many unwanted ‘empty’ documents stored in OneDrive for Office online. Additionally, think about allowing M365 admins to switch off any other template provider to avoid presenting non-brand compliant templates to Office users.