I really like the flexibility of the unit, it is the only one that I have found with the flexibility I would like. I am strongly considering swapping my Boss ES for it.
One thing that would really help is if there was some visual display for the other 6 buttons. I notice on the forums that certain users have programmed their own 6 button expansion units, but the problem is that there is no visual display to indicate a toggle state etc.
What would make it most useful is if you could sell your own expansion unit which included a visual display that would work the same as buttons A-F, OR if you could add a Midi type that would let you change the display of one of the A-F displays from the G-L buttons.
Is this something you are considering adding at this time?