Specially for RnB or jazz type expansions. While audio to MIDI conversion tools like found in ableton, logic Melodyne etc are sometimes adequate - having just the hand crafted MIDI for - say - keyboard loops would add so much more flexibility.
I'm not here asking for any particular genre - but what would be really cool in future - and maybe requiring some new features- would be MIDI file equivalents for melodic and chordal type loops.
