Username change at login

[BrianDee]

If you have had your Betfair account probed by a would-be hacker, you will want to change from email address to username.
Or at some point even change a username.
Currently BA cant cope with this and you have to email support to change the credential for you.
This can take up to 24 hours if you catch it at the wrong time of the week.
IMHO we should have a way of doing this securely from the BA login dialogs.
If it can cope with 2FA logins, this *should* be a PoP to code
I think more users will want this as more Betfair accounts get hacked...
What does the massif think?