HMMM LIKE that idea alot good plan. Yet I just throw my two cents into the mix.
HAVE THE MIDDLE X CHANGE COLOR!!!
for instance u push down on d-pad .
LIKE ON UR CONTROLLER IT BLUE instead it goes TO RED
Then that show YOU in rf mode yet when you hit the sync button to go into different rapid fire modes for instance
PLAYER 1 FOR MODE 1 rf
PLAYER 2 FOR MODE 2 rf
PLAYER 3 FOR MODE 3 rf
PLAYER 4 FOR MODE 4 rf
EACH TIME YOU PRESS THE SYNC BUTTON THE PLAYER SLOT WOULD BE A RED. on you controller X would change to red and player one would change red showing RAPID FIRE ON AND UR MODE 1 ON THE RAPID FIRE. NOW 2,3,4 ON YOUR CONTROLLER WOULD STAY BLUE. Now when I goto mode 2 on the rapid fire one would go back being blue and PLAYER 2 CHANGE TO RED that would continue thru rest of the modes.
HOPEFULLY IT MAKES sense if not SORRY