AJ, this seems to indicate that a merger, or at least an alliance is being formed. Right?
Use the Yamaha OS, Ketron registrations, Ketron "live" drums and bass, Yamaha lead voices. Vocal harmonizer with best features of the one in the SD1 and Tyros 2.
XLR mic inputs.
Light weight (under 32 pounds).
Ability to play all the things on the Midjay (styles, MP3s, WAV, Midi, loops, etc)
Hard disk Recorder. Quick PC connection.
Removable disk storage.
Capacity for expansion.
In other words, the best of both worlds, at a light weight, and a reasonable price. It can't be Wersi-type prices, but maybe a top model comparable to SD1 or T2, and a mid range in the PSR3000 area.
Let me know if you want me to come help you design it. I'll pay my own way.
DonM