This just what I was thinking.

At present any arranger can be adapted to personal needs. In the case of Korg you can replace all the style banks. In the case of Yamaha you can use the Usb stick and then access the styles through the screen...But we want the hardware. The ideal arranger would be a keyboard and an a huge touch screen from side to side of the console including 20 or more programmable sliders on top above the screen and 50 or more buttons and knobs underneath the screen. The names of the sliders/buttons/knobs should be placed in screen. The screen could be designed by the users for extra functions choosing the color and graphics they want. Just an idea.