A few years ago, I posted a topic called "BiaB :A Swiss knife?". It was intended to question the trend of the soft relative to its initial goal.
Actually, when I bought BiaB (in floppy disks), the dealer told me it was an accompaniment software designed by Canadian jazz musicians for jazzmen. Now, BiaB is everything for every people.
IMHO, PGmusic should choose what they want BiaB to be and stick to it. Honestly, I personally never use Klerzmer, RAP, metal, etc music styles and I don't think I will.
Many people use BiaB to create backing tracks, proving that's evidence of useful potential of the soft.
As for AI, other members rightfully said that it's only a tool, and it's output will heavily depend on input quality.
I currently see several possibilities of applying BiaB to jazz creation : sampling, soloing, strings and brass arrangements, vocal jazz, etc.
I'd be particularly excited if BiaB could use pdf scores (partial or whole) to serve as a starting point to make a background multi-instruments music... Can be endless possibilities there...