I have a user that is getting the old reports and analytics interface on logging into analytics.  It is the screen under workspace when clicking on that option. 

Since there are only 3 list vars, you have probably already used them.  One should probably not be used for this. I would go with a prop and be prepared to use segments (as needed) to answer the question of if the selection changes the success event frequency.   If you have a set of codes for the op...