I was thinking about adding 16 extra buttons above the lcd displays which would function the same as the track group and track columns. I came across this want when I was trying to change transpose, solo, direction, manual triggers, loops etc on more than one track simultaneously. I know there is the f4 button but with 16 dedicated buttons (with leds) I could easily enable all the tracks I would want soloed or transposed etc with immediate visual feedback and know whatever menu I was in that those tracks would be altered. I think this would be a very powerful live performance upgrade.
I assume I would need an extra DOUT and DIN module and change the hex file a little? Are there any restrictions as to why it could not be done?