The EUROCONTROL APF ESARR2 introduces a new approach to safety, based on the evaluation of ATM performances, integrating the principles of a Multicriteria Decision Making methodology: the Analytic Hierarchy Process. This flexible tool presents a set of features that can be investigated, to extend this first application towards an effective managerial decision support system. In this document, a project of evolution will be presented, based on ENAV requirements to go beyond the synthetic evaluation of ATM Safety, exploring all the possibilities that MDM analysis allows.