Yeah... I would probably opt for the "live input" of midi or a real bass guitar part to do the fancy or complicated stuff.

I normally have a limited level of patience in trying to get BB to do something like that. I don't have time to set there for hours trying to figure things like that out. Slap a synth in there and play it.

You can find my music at:
www.herbhartley.com
Add nothing that adds nothing to the music.
You can make excuses or you can make progress but not both.

The magic you are looking for is in the work you are avoiding.