if you have an existing post that you want to show in a different channel, you can edit the message and cross-post. This will add the top-level post to the different channel, but will not include the full set of replies. We will keep this request in mind as we evolve the cross-posting feature in the future and update if the status changes.
Details on cross posting can be found here: https://support.office.com/article/cross-post-a-channel-conversation-in-teams-9c1252a3-67ef-498e-a7c1-dd7147b3d295.
Improvements to day/work week/week view are in the public ring. Our focus now is a new scheduling experience and scheduling assistant, appointments and more.
For feedback related to Group Calendar please see this User Voice item: https://microsoftteams.uservoice.com/forums/555103-public/suggestions/16933204-include-office-365-group-calendar-in-teams.
This is working today in the web client on Edge & Chrome. The team is actively investigating feasibility in the desktop client.
We are working on the release of the Tasks application in Microsoft Teams that will aggregate data from Microsoft To-Do, Planner and Outlook with more capabilities on the way. You can see Planner data in Kanban views today, and the Tasks app will continue to support that view. In January we announced task publishing which will release with the new app. Get an overview at https://youtu.be/rTATVGroEsQ.
This feature item is still in the works. We will keep you posted as we have new info from the feature team.
The team continues to make progress on this. We will share more details as we have them.