Using Sensitivity labels with Microsoft Teams, O365 Groups and SharePoint Online sites

Is there a plan to consider teams meetings as a container and apply a sensitivity label to meetings initiated?

My customer would like to clearly indicate that a meeting is unclassified and be sure end-users are aware before they share content.

It would also be good to prevent sharing of content that is labeled higher than that of the meeting.  

Also, is there a way to make the sensitivity label stronger visually present like we do with Banner/waterwark in documents ....today label is somewhat hidden in small print in a corner.