OK hope you guys will find something from thous pictures... but overall i think the aux stuff will give you more power of efx and one multi instrument
about the aux.... the aux idea i think is i use one multi instrument and i can use also different kind of efx... by sending each sound to different channel ! but you have to draw midi data in to main inst. Maybe there is a way that you can also draw midi to aux channels dont know
still figuring that out!