NFS version support, v4.1 is not fully featured to the RFC and v4 support would be nice.
Simple feature set, need to be more enterprise focussed.
No tool to clear NFS locks.
No expert mode for troubleshooting no ping, trace route, etc.
Logs are passworded.
RBAC roles are limited and not granular enough.
No local user options other than pure user LDAP/AD only.
No SSH key trust, so no ansible automation possibilities.
Replication needs work, can't manage bandwidth without involving support.
Replication can't mount replica as it only reads normal filesystems, only snapshot view.