Thank you for your continued feedback, the team has this item under review. We will share an update as soon as one is available.
I apologize for not having updated this. Changing the landing page for a Team and/or Channel remains on the backlog at this time.
Customizing the files view has been announced and is coming soon! This will include viewing metadata from document libraries and lists.
Here is the link to the blog post that details the features that are coming: https://techcommunity.microsoft.com/t5/microsoft-sharepoint-blog/rich-new-file-and-sharing-experiences-throughout-microsoft-365/ba-p/960129
Thank you for the feedback, have you tried changing your Notifications under settings (you can find this by clicking on your picture in the lower left part of your screen). You can customize the type of notifications you receive from Teams.
An error occurred while saving the commentDebbie commented
Today, I received the same message "You're missing all the action". I had, actually, already read the threads referenced so not sure what algorithm is used to send email. What triggers this email going out?