Lack of interest 'Ban This User's Domain' In Admin CP

If I'm viewing the member information of a spambot/etc. in the Admin CP and I see that they are using an email provider that isn't currently on my blacklist, currently I would have to go to 'Banned Emails' and add the address manually before returning to the user page to delete their account.

Would it be possible to have a link under/next to the field with the user's email address that adds that domain to the blacklist without having to navigate away from the page?

This isn't a particularly important modification, but it removes that extra step in the process of removing spam accounts.