Universal Group Owner or Active groups with no owners

Hello All, 

 

I apologize if this is a silly question but I am trying to help my organization research Best Practices for keeping public Groups active without an individual user as an owner. The use case for us is that we use Groups and teams to coordinate engagements with our clients and those engagements regularly cycle from active to inactive. Groups and teams are a great way to keep institutional knowledge of our clients but during the inactive periods, we would like to free up our users from seeing those groups in their list of joined groups. My initial thought was to have a shared user account that could be used by admins to keep all of the groups open that were not active. Is there a better way to keep groups active without an owner? 

 

Thank you in advance!