Please create the feature that allows a user to create a draft version of a message.
Not all messages are a quick stream of conscious thought. Some messages need to be created over time. The only workaround is to save the save out of teams. This is less than ideal.
This is still an issue and has gotten votes in a recent post. Maybe should be combined. https://microsoftteams.uservoice.com/forums/555103-public/suggestions/36937552-draft-message-and-schedule-send