ShapeShifter, my thought exactly, it would be the natural thing to do.
SD card management
I mean, to me, the word 'management' implies doing things such as formatting, deleting files, creating directory structures, everything apart from writing the normal data files that some folks do on an Arduino with SD card.
No one wants to format their SD card using an Arduino connected to your computer by which you do so via a terminal screen. That just takes me right back to the good old days of PDP and VAX, where all you had was a terminal screen. :