Lets use a Nord C1 keyboard for starters and stretch the top keyboard to 73 keys.
Add the Roland VK or Hammond drawbar engine.
Use the Yamaha Grand piano samples and their multi-pad idea.
Use the old Roland chord sequencer and the phrase recorder (ala XP50,60,80).
USB in and out.
Sr-16 type drum programming.
Keep it under 40 lbs. and under $2500.

[This message has been edited by cassp (edited 08-30-2007).]