Hang on.
Can I ask a stupid question? (yes, another one)
If there is no "Full Fleshed" sequencer on board, can you not properly edit Midi-files on the keyboard itself?
I realise you could go to town on any PC, but I much prefer even some quick "changes" on the board.
Can we at least change select instruments/sounds on each track, reverb, delay other fx, velocity changes etc etc?
If not.....well.