Hi,
Recently I came across with the enhanced one and user friendly transaction code to evaluate the trace results, it's "STAUTHTRACE: Using the System Trace to Record Authorization Checks". However it has the limitations to provide us only with the authorization successful/failures logs, but the logs are very much explanatory in itself and quite easier to use.
I might be late in exploring it but thought of sharing this across. For more details, kindly go to: http://help.sap.com/saphelp_nw73/helpdata/en/92/7ac87d293a47d8a17368c9f45661f4/content.htm
BR,
Ameet Kumar