Add individuals to Power lists

Being able to add individuals to a power list would be awesome. We send our release notes through JO and I always receive responses that our clients would like to add this person, and that person to the email distribution list. They aren't always in our Salesforce system so we can't always do it. We would just need to make sure the contact we are trying to add has all the necessary information for any tokens that are included in the list. Name, Email address, etc.