I use BIAB to either generate backing tracks for my own use at home, or to generate parts that I can import into Reaper, replace with my own samples, and form the basis of a track with other live instruments.

I am strongly against messing with the current melody and solo generation in any way (unless it's adding a new melodists to the existing ones), just because it still produces more usable results than the AI software currently out there. And the MIDI aspect means that you can replace it with whatever patch you want, or throw it onto notation and learn things from it, or seamlessly edit choruses together, etc

I know not everyone is a fan of the presentation but I've been using BIAB since 2002 so I always have a pretty good idea of where I need to go.

I guess what I'm saying is, please don't touch the features of BIAB that are still the best at what they do.