I've noticed there's no "User Status" information available for Office 365/Skype for Business/Teams. I believe this would be a useful addition, as it could be used to drive automated emails from Flow. (User Status as in Free/Busy/Working Elsewhere/Out of Office/etc)
One example is a project I'm working on, where I'm trying to have emails with a certain structure (from a certain email address, with a certain subject line) auto-forwarded to my backup if I'm showing out of office at the time the email comes in. This flow would then be extended to my team, so that they will have these types of emails forwarded when they are out of office.