The Risk Drivers report from Acumen Risk provides a unique insight into true cost and schedule risk drivers in an easy to understand tornado chart.  Using a metric called Schedule Contribution Factor, Acumen Risk reports activities or risk events with a high impact on the overall risk exposure of the project - and reports these in true cost and schedule terms.  Additionally, the risk drivers report allows you to differentiate between the effects of Scope Uncertainty and Risk Events to determine whether it is the activity scope/certainty or indeed a risk event impacting the activity that causes it to become a key risk driver and allowing you to focus your mitigation efforts.  

There is a short video demonstration on the Acumen website further explaining this concept: 

http://www.projectacumen.com/resource/prioritizing-risk-mitigation/