Better Group Management. I think it would be useful if there were more options regarding group members permissions. You could create 'subgroups' of members in addition to "Owners", "Members", and "Visitors", where you could assign certain group members to these 'subgroups' and modify the permissions of this 'subgroup'.
A. G. commented
Would you have more upvotes, if you would just call it "Nested SharePoint Groups"?
Sylvie Stutzmann commented
When working with large communities user access is always a cumbersome topic.
If we could use sub-groups, we could have managers manage their own sib-group of users and at higher level we would manage the access rights for the various sub-groups to specific folders of the SharePoint