Be good to be able to see when people are online as opposed to just on teams
Christopher Frenning commented
I've just recently been switched from Skype to Teams, and I miss the list of people that are online (I sorted by Status in Skype). This gave me a feeling of not being alone when working from a home office or late at night. This social aspect is completely missing from Teams (although I can proactively switch to Manage members of a Team to see their status, it is far from the same).