My dream product would be a digitally controlled polyphonic 8 voice synth with:
A 64 step sequencer
Built in drum machine engine separate from the synth engine controlled by touch screen virtual pads w/velocity response.
Opposed to the popular wooden ends seen on many analogue synths, this would have brushed metal ends, with a wooden dashboard for the main control panel, and brushed metal piping/accents on the control panel. All backlit by a soft but electric looking, blue, simular to the DSI tempest.
This would obviously be a pricey synth, but, I'm sure you'd agree it sounds awesome...