Email Notifications - Add "Requested By" Info As Default

When looking at email notifications, it can become quite confusing on who placed an order when the Customer Information section on the email notifications defaults to the user account primary address and the primary address changes frequently. It would be nice to have a "Requested By" section above the Customer Information section by default on all applicable email notifications which includes: the first/last name, email address/username for the user who placed the order (based on their profile information).