In bug 844035 we identified that after deleting an account and signing in again with Persona, you are signed in with your email address. This creates a false feeling that your account was not deleted. Suggested fix: When an account is auto-generated, provide a message in the UI welcoming the new user. Message: "Hi there! Get started by creating a profile for our community directory." We can show this message in a yellow info box.
We can just fix the sign-in problem, instead of displaying a message. If we fix that issue do you still want to display a message williamr?
As bug 844035 is fixed, this needs no fixing.