When looking at a chosen range of recent campaigns, it would we invaluable with the option to sort by the different chosen values. I’m talking about the classic little arrow (used in most applications), next to one of these (under Campaigns):

To be able to look at the best performing emails within any given range and see what they have in common, there is a lot to learn.
I know there are other reporting options, but just sorting this list by whatever you want, makes it instantly available as you work with your recent campaigns.