Starkeeper, you should be able to apply a rotary effect. It's standard in XG. And you could probably layer several organ sounds via sysex. Check the manual for multi-part sysex. As for touch sensitivty on the 740, the keyboard velocity is turned on and off by the Touch button. The problem is in the synth. I asked Yamaha about this and their excuse was that the wanted the organs to sound like "real" ones, eg. Hammond, so the velocity is always at max. Poop! They could have done it if they wanted. All the other panel instruments are velocity sensitive. It's the same on the 2000 and 9000 though the 9000 sounds better than the 740 and I could use the panel organs on that.
Bryan