The reason why 90% or more of what I do in BiaB is MIDI is because it is extremely editable.
There is a trade-off between being better tone or the ability to edit the music.
Do you want the music to sound better or the music to be better?
I have a few good MIDI synth modules, so the tone is 90-99% as good as the 'real thing', depending on the instrument.
For me, the ability to export the excellent output of BiaB as a MIDI file, import it into a MIDI sequencer or DAW, and then play with it (edit) to my heart's content to try to make it even better is what I like to do.
Simple edits like changing a guitar sound from a clean to a muted, or changing a piano to a clav, and so on can make a big difference. Changing the inversion of a chord is simple, putting the note on top that I want on top can make a big difference. Removing a drum roll or moving it around to a more appropriate measure is easy too. Putting song-specific figures or licks isn't that difficult if you have a MIDI controller.
After the easy edits, there are a lot of more extensive edits you can do with the continuous controllers
(Complete list of Continuous Controllers) tempo, intonation and a million other things.
All of these edits cannot be done with Audio.
But there is more than one right way to make music. I like to play with it, put my own creativity into it, and learn more about what makes music tick while I'm doing it. But that is just my way, and may not be right for the next musician.
Insights and incites by Notes ♫