Coming from the compliance space, many of my clients want to make use of Teams, but simply can't have content stored within the Files tab (aka Shared_Documents library). They want to ensure that different types of file are always stored within different document libraries, and have different metadata applied. As such, the questions I always face from clients are:
How can I remove the Files tab?
How can I force a user to select one of the document libraries within the Team site, each time they associate a file with a conversation post?
When I move a file, how can I ensure that doing so doesn't break the conversation post?