Hey boys, you are wondering to the side.
I understand that some people have a passion for that program. I am not questioning your choice

The question is really this:
What are unique features that are missing from BIAB that are in RB in working with PGmusic content?
Seems that Scraps feature is a Big one that is missing from BIAB. Sounds interesting how rharv described it:
"It's a unique way to grab a chunk of a song and save it for later or use in another project.
AND you can load any MIDI, Audio or seq chunk that way and it will adapt to the current tempo. (Time-stretch etc, if I recall correctly)."
I can see it being very useful.