This request may seem a bit backward but I feel it would be useful...
It came about as we have a difficult client and communications have broken down so I have asked them to find a new provider. They have moved their hosting but they don't seem to not be moving their domains away.
I'd like to add a method to stop them being able to order new services or renew their domains but can still login to their account to manage the domains and contact us for support. Whilst I am not in the habit of requesting clients to move away this is a feature that would be useful in such circumstances.