Dan, what do you think about some adjustable split points? All zones at midi channel 1. Look at the picture. Could you do that?
Yes, you can do it.
You can double click or right click on any track to get the SOUND EDIT screen.
You can edit the 8 Right 1 2 3 4 5 & Left 1 2 3 tracks, and change their KEY FROM and KEY TO values to do the split. this is done by MIDI LEARN
Once you love your big preset, just SAVE RIGHT SOUND or SAVE LEFT SOUND