Email List Performance Report Needed

I recommend Marketo create a way to easily see how the various lists that were selected for an email performed.  Ideally, in the email tab of the marketing activities folder one could go a level deeper and see how each of the lists that were included in the email contributed to the roll-up of the results.  So if 3 Smart Lists or 3 SFDC campaigns made up the Smart List parameters for the email or campaign, it would show all the KPIs for each list and the total of the three would be the total for the email or campaign.  Right now I have not found a way to get this information.