Ted I don't understand why an accompaniment sound needs to re trigger or not the sustain..

Are you referring to a real time sustained tone in the arranger chord area?

Give me an example of what you would need this for..

That said, if there is a command or an advent..Roland G70 will allow you to turn on or off at any interval of a style in any division...(microscope)..
Also the G70 uses an "auto" hold , besides the standard on/off for each real time parts..
Help me understand your point...

Ted are you aware..Roland top models allow you to program 54 different patterns per style....How sophisticated is that?..

Your last statement is very true..it is how it does it....and maybe since it took a long time for you to get the handle of a Korg....maybe you are selling the Roland short...