Built-in wireless midi and audio.

A light weight, state-of-the-art, detachable, 6hr battery pack (maybe 1" thin and covering the entire bottom of the keyboard).

A 61-note keybed expandable to 76 or 88 keys with a snap-on module. Key feel, from synth action to weighted, could be dialed in from the front panel.

24 sliders, 36 buttons, 10 knobs, 1 touch screen, and 3 rotary dials, ALL PROGRAMMABLE, so that the entire control surface/user interface could be customized to the users own preference. Each control would have a small (but legible) lcd display beneath it describing it's current function.

OS that would instantly recognize (and correctly play) any style or soundset from any manufacturer.

Songbook feature that would include and automatically supply the chords for the harmonist (in the correct places in the song, of course).

Instant keyboard disable mode so that you could pretend to play without arousing suspicion while the midi file was playing.

1-button instant solo generator that would respond to the left-hand chords. This would automatically mute the right side of the keyboard so that you could pretend to play the generated solo.

State-of-the-art pitch correction for the crooners among you (you know who you are).

Entire unit would snap apart into two sections, each weighing less than 20 pounds.

Although manufactured in China by an anonomous international conglomorate (except for keybed, made in italy), unit would come with interchangeable corporate logos of the big three (4?) to be decided by user.

Price would be under $1000.

chas