Pipeline,
True... I even tried a drum machine VST on "Through" mixer track in BIAB with some success.
BIAB sends tempo and start/stop sync, so that kind of works. But drum machine is a drum machine, I am not a drummer, so I wouldn't know how to program groves or such.

This topic is about mainly about Midi styles that are already in BIAB.. They make up about 40% of all styles available. I think user should be able to pull individual tracks of these to mixer channels without acrobatics, same way you choose RT.

Or even better, be able to work with keyboard styles within BIAB, there are great many available with all the variations, breaks, endings already in place, they will sound as good as your synth.

P.S. Is this you, Gettin' Old (all BB)?