I'm in the Certification Agency Program and this would be very helpful with all our workspaces. So when most of us join and create a account we may not have a business email or domain yet... so my log in was created with my personal email. That personal email is put on a drop down in every workspace created. ALSO all my CF bills and CF emails go to that personal email where I would rather them now come to my business email. Instead of inviting ourselves as a admin to our own workspaces just to add a email lets just change the log in account settings and then every workspace will have that business email. That's what me and support just came up with and tried and it worked beautifully. My email drop down now has my workspace domain choice or my business email choice and now I can log into my account. Maybe support can get this done with a easy click of a button to change our account setting log in email.