Once the relationship has deteriorated to a point where the consumer is actioning their Right to be Forgotten, it is important to define stages that the consumer will witness. A process that helps them feel comfortable, informed and in control. In view of this I propose these stages to help frame the situation, set expectations, agreements, and consumer responsibility.
How does the business acknowledge the request and what it means. Reminding the consumer of earlier statements made, functionality lost, could help in that acknowledgement.
How can the user have a role in the process. Part of taking personal responsibility requires interface elements to be actionable by the user.
At on-boarding the use of radio buttons in T&Cs to acknowledge agreement is common. Although legally excepted, as a user interface it fails as consumers often overlook the text and just click the button.
How should the consumer observe deletion? What is the time frame? What type of process? What trusted party endorses the process? There are going to be varieties issues and approaches. From immediate ones that could use an animation, to scheduled events requiring a different type of feedback to observe. Ultimately the consumer needs to observe a satisfying and conclusive end to their consumer data.
How can parties agree it has happened? What processes have been completed? What evidence can be provided and who is the authority that will authorise it?
The consumer needs to feel confident that a process has been completed. They should be able to show something that proves deletion has taken place. It is not an easy task, as outlined in earlier passages with the burden of proof issue.