I typed in "Variety" at the BIAB help page and spotted a few things that might make things more interesting.
--Making Bass Patterns.
--Making RealDrums styles.
--Select Guitarist to generate Chord Solo
--Style changes at any bar (mentioned in my original post).
--Making Guitar, Piano and strings patterns (I am not sure what that is).
--Making Guitar Styles with the stylemaker.

Matt pointed out how to put in a fixed popular bass line at ths thread.
http://www.pgmusic.com/forums/ubbthreads.php?ubb=showflat&Main=49238&Number=337389#Post337389

Last edited by bowlesj; 12/14/16 04:51 AM.

John Bowles
My playing in my 20s:
https://www.reverbnation.com/johnbowles