I'd love to see a full-featured midi editor like you find in a DAW like ProTools, Logic, etc - with editable event lists, continuous controller data lanes, etc - to refine or modify the data created by Human Playback.
It would be great to have a command to write HP data, then turn it off, leave it in the file, and make it further editable via the midi editor.
This would enable the writing of keyswitches for other libraries, controlling fermata durations, the behavior of certain articulations, etc.
MacOS High Sierra
Finale 25 latest.