what about an MB expansion designed like this:
it would contain voice, sequencer, arpeggiator, modulation and preset expansion
- a square MB design flat box, the face side a big touch screen
- virtual matrix
- analog voices (number?) outputs on the side
- communication with MB via USB cable ( midi sync via midi jack)
- really advanced arpeggiator (like ROLANDs iparpeggiator) & sequencer with page per bar
- drawable modulations, assignable to all parameters
- really good preset management with "unlimited" entries, categories, tags, snapshots like on the MOOG ONE
- maybe some encoders and buttons around the edges