Due to prioritization of other work-items this has been moved to the backlog. We will update when it is being actively worked on again.
Please check “Teams/Skype Consumer chat and calling interop” on the public roadmap at microsoft.com/microsoft-365/roadmap?filters.. for updates.Lionel commented
Adding Skype public would be a good step forward indeed.
Coupling with "Support for Private Channels", Teams would become a great tool.
This feature continues to be in the backlog, we will update when we have more details to share.