Invite a person field should be changed to also auto complete groups
Invite a person field should be changed and renamed to include inviting groups or distribution lists
At present it only auto completes user accounts, to add a group or distribution list you have to enter it manually as a guest.
Currently you cannot invite an email distribution group to a Teams meeting from within Teams but you can in Outlook.
It would be nice if teams could resolve distribution list email addresses to group members just like Outlook can.