We’re currently working on improving the group events experience.
While not exactly with checkboxes like the OP suggested—I’m confident that we hit each point (including the bonus!) that you’ve suggested.
What we’re doing is that we’re simply going to follow who is on the To line in your group event. If you don’t put anyone there, then it will be saved on the group calendar and folks can add it to their calendar. If you do put specific individuals, they get an invite in their inbox. If you put the group in, those who are following calendar events in the group will get an invite in their inbox.
Follow the feature here on the Microsoft 365 Roadmap: https://www.microsoft.com/en-us/microsoft-365/roadmap?filters=&searchterms=46257
@Fredrik: In the new Outlook on the web, there won't be any invitees by default on the To line, so yes, by default, no one will get an invitation.
In Outlook for Windows, appointments and meetings are separate buttons, the former continues to have no one on the To line (and no one gets an invitation), and meetings will continue to have the group on the to line (and the group will get an invitation).
Thank you all for your comments.
Based on your feedback, we are updating the default privacy setting for groups created across all five Outlook endpoints (web, PC, iOS, Android, and Mac) to be private by default where only approved members can see what’s inside the group. For customers that want to continue with the existing behavior of public by default (where anyone in your organization can see what’s inside) we are providing an Exchange Online PowerShell cmdlet to define the default value. This update will gradually rollout to all Outlook endpoints in the coming months starting with Outlook on the web.
Keep your feedback coming.
This change is now rolling out, please see this post for more information: https://techcommunity.microsoft.com/t5/Office-365-Groups/Groups-in-Outlook-and-Group-connected-team-sites-are-now-private/m-p/186395#M5266
Thanks for all the feedback on this item. We’ve started initial thinking and investigations on possible designs for this feature.