Talking of modules.. Dan`s vArranger sofwtare could be combined with multiple sound modules MIDIed using say Midi Sport 4X4 midi interface. For the more complex features wanted here, Dan could take these into consideration for versions coming up if not available now. I feel these can be done by expert programmers like Dan. And more importantly, he listens to his customers.

And yes I agree that manufacturers should bring out arranger modules and more so with a touch option ...