Touch' I get what you want, and i know you don't want to hear this, but what you are asking is already possible .... in RB. the 7 tracks in Biab are designed specifically to generate of a style, or with RTs. To add the ability to split out midi files other than melody track or soloist track, is kind of redundant. all you have to do to do this is open the file in RB. All the tools are built in to do all of this type stuff on all 48 tracks.

One feature i would love to see in RB is the ability to highlight a note on the left hand grid and copy all that one note. So you can paste to a different track. You can drag and copy but it is a tad clunky right now. RB will split midi files and allow you to handle them separately, and it will natively open BB files and split them automatically.

Lenovo Win 10 16 gig ram, Mac mini with 16 gig of ram, BiaB 2022, Realband, Harrison Mixbus 32c version 9.1324, Melodyne 5 editor, Presonus Audiobox 1818VSL, Presonus control app, Komplete 49 key controller.