I would like to suggest the addition of a filtering option for duplicate characters. (All * ranks)
Sometimes when cycling characters, it can be hard to track who you've got 2 of. I tend to keep my maxed out character at least until I get enough covers to champ the new recruit, but occasionally I will clear out a maxed character to start cycling another one, but it's time consuming looking through your whole roster (even filtered to rank) to find which are dupes.