It would be great to have a approval process for the deployment.

For example, once we have completed the comparison and validation, we can click a button "e.g.: Submit for Approval" and an email will be sent to a list of email.
In the email, receiver can review the summary of the deployment (e.g.: source org, target org, number of changed/new/deleted components, ...) and click on a link to approve or reject the deployment.
We can deploy only when the job is approved.