2FA landing page should show which account is being authenticated

Users who have 2 or more accounts (e.g, work and personal) who browse to http://bitbucket.org with an old session still in effect, are presented with a 2FA page that doesn't say which account they're authenticating.

Please show the username on that page, to save users mistakenly locking out the account they didn't think they were using, or just to avoid that frustration.