Please give some sort of tabbed view
Give me the ability to bounce between a team discussion or file, and a chat with a separate person without losing where I was in the shared team file. This could be done with tabs if you will.
Sean Ellis commented
This is closely related to the more general separate-windows idea here: https://microsoftteams.uservoice.com/forums/555103-public/suggestions/16926739-multi-window-for-chats-and-more