It would be good to be able to click on a calendar button on the left hand side to get a view of the Office 365 groups calendar as you would in the calendar app. Good for being able to look and get a glimpse of what is coming up with the group. At the moment I have to go back to the calendar to look at it.

I really like Teams. I do. But the current chat layout is not suited for professional chats. It's way to space consuming. It looks like something imported from MSN with smiley's that take half of the screen. I would say that Slack have nailed it because they focused on the ability keeping a tight window with lots of chat text visible. In Teams the window is full and starts scrolling after like 10 sentences.

Enable an option to start a screen sharing session without starting a video call. This is a common use case in our organization.

Ability to see who is currently in a channel. Hipchat and Slack have this feature

It is annoying to have to click on the “New Messages” button or scroll down manually when new messages arrive. The suggestion here is to keep scrolling down to bottom and to provide a button to jump back to last unread message.

Please integrate more with Planner (hopefully soon with Kanban and timeline visualisation channels for tasks) and/or with sharepoint web parts that do this, so all tasks linked in one place. And Outlook as well (for calendar and emails pertinent to chats and tasks). Until then in effect Teams is yet just another tool to use that is not completely integrated for communication + coordination.

Would love to have a Calendar to allow those in the same team to view each other's availability and whereabouts. Would make it a lot easier to create appointments/meetings.

The calendar could be a tab in a channel (so then you could have multiple calendars in one team) or could be an icon on the left app bar, instead of "Meetings" which is helpful to no one.

Could also be helpful to add a way for us to add a SharePoint Team calendar.

Slack has this: get.slack.help/hc/en-us/articles/206870317-..

Add a whiteboard to share.

I want to have separate top-level windows for each person I'm chatting with, rather than tabs.

Use Windows 10 notification center for notifications

When renaming a Team Channel, the associated Sharepoint folder continues with it's previous name. This could lead to confusion.

Every time you create a task in planner via Microsoft Teams and assign it to someone in your organisation/team it would be nice to see that task in outlook as well. I want to know and to be alerted that I have a task assigned to me without having to lon on to Microsoft Teams.
It would be great to have a place to see how many tasks have been created in a team/channel and the status of each one.

Notifications built into the OS (which all apps I've seen use other than Outlook and now Teams) are more functional and allow for more user control. Most importantly, they honor Do Not Disturb settings, which is critical.

It's very confusing to new users that there is a difference between replying to an existing conversation and starting a new one within a channel. This is a visual thing as much as anything else. The 'reply' buttons are not naturally attractive if you just want to start typing a message. There should be a logical gap between the bottom of a conversation and 'start a new conversation'. 'Start a new conversation' needs to be separated visually, as if it's a second order command rather than a first order...reply.

Guys, please add pinned items for channels. We often pin important articles/messages/files so that the whole team can see it. Very important!