Hi @AxelTU Thank you for your proposal.
I think it is a long term wish to have a independent administrative tool for policies and users/groups. Most admins currently use RSAT tools on a Windows client when they use Samba4 account provider. On NethServer there is phpldapadmin module available https://wiki.nethserver.org/doku.php?id=phpldapadmin
You can also have a look at LAM. This has been discussed here: LAM - LDAP Account Manager
But a solution from cockpit with more options to manage policies would be a huge asset.