There are many other plugins which utilize the main admin menu at the very top (black-grey top bar) to add items.
It would be nice if you can add WP Super Cache Delete Cache option and the On/Off option to the top menu.
I sometimes edit my .php files and I have to keep going deep inside the WP Super Cache controls to clear the site after my edits. I make a lot of modifications to some files in small steps (I am a student) and it would be very useful feature to have (quick access).
I am sure few people here would agree with me. Specially if you are a developer or a student fooling around the WP codes. :)