Hmmm, even though this is a little late for chiming in here lol, i thought of a kewl saying for the caption.....
at the top it would say :
"WANT PURE GAMING POWER?"
and then below add the ever famous -
"BUILD YOUR OWN ARCADE CONTROLS!"
In the middle show a couple of joysticks crossed like swords and underneath them perhaps a trackball and spinner slightly below the sticks and just behind the lower portion of the joysticks. Just sounded like it would look kewl lol.
Wish i could design artsy stuff as i would just make one myself lol.