I need to collect a few more ideas, hence the request here as a placeholder. I'd like a plugin as it is in drupal, oragnic groups. the idea: open group members, these are linked to the user profiles. there should be a group admin, moderator and a normal user. if we now have a team of two people. , the one that joining your group and write their own contributions. the user can also join of multiple groups, if the moderator permits, etc. something like hotaru still missing unfortunately. I know it is a very very large piece of work, but let's see maybe I can implement it as intended.