I wish Korg would determine and display the chords in a midi file, as Rolands do. I have used this to learn some songs when I was using Roland more. It's not 100% accurate, but generally very close. Not a big thing, but it's sort of neat.
Diki, supposedly the soon-to-be released major update for PA3X will allow the chord sequencer to transpose. We'll see.
I also wish my keyboard had two mic inputs, as Audya does.
DonM