The LOGV2_DEBUG at log ID 11259900 ("Received command targeting directly a system buckets namespace") currently logs command, isRouter, namespace, client, and connId, but does not include the application name or driver name of the connecting client.

Adding appName and driverName (via ClientMetadata::getApplicationName() and ClientMetadata::getDriverName()) would make it easier to identify which application and driver is directly targeting system.buckets namespaces, following the same pattern already used in the slow query log.