Hex Univention,
I really love your UCS Server but I miss some things in your Single-Sign-on approach.
#1 SAML has missing the part of SimpleSAML ldap:AttributeAddUsersGroups to list users Groupmemberships in the claim for authorization at the RP.
#2 Your OpenIDConnector misses the possiblity to login with kerberos-SSO like SAML-Plugin does at UCS.
#3 Where can I managed authorization Attributes at the OIDC-Connector in LDAP?
#4 Please build more SSO-Connectors like Oauth2.
kind regards phiku