When an entry is added on a group calendar, it also shows up on each member's personal calendar. Most users do not want to see the group calendar invitation on their personal calendar: 1) because they are already a member of the group, b) not all group activities apply to the every member, and 3) for higher volume calendars, each member is burdened with a lot of time wasted in deleting these entries to clear out their own/personal calendar. SUGGESTION: Add a setting to the Group so that this behavior can be prevented. Selecting multiple calendars (even group calendars) should be a simple and consistent thing for Outlook (local) users to do without additional/unnecessary cleanup work.
As the person creating an event, simply create an Appointment (in Outlook 2016) or an event with no attendees in Outlook on the web with the "Send a meeting invitation to group members" unchecked.
Doing so will make sure the events stay only in the Group calendar, and is perfect for FYI items like out-of-office.
This would allow users to see at a glance what emails have been sent to the group, and/or apply filters to move the messages into a particular folder.
Navigating to a group in Outlook 2016 or OWA left navigation is the premium experience for catching up on conversations in a group context.
If you want to filter email sent to a given group in your inbox, consider using the to:gorupaddress search in Outlook or OWA.
Most groups we use in my organisation are for specific projects, so we also use planner for each group. And what can be useful for us, is to have also a planner tab (near : conversations, one-note, files,...) that when we click on it, shows directly the planner board for that group.
Protect O365 groups that are base of Team from being deleted.
When you create a site with a group, it's very hard to delete the site.
I think you have to fix this bug: when eliminate a SharePoint site, groups should be eliminated on cascade.