Dave:

As a long-time BIAB user, I understand your situation, I just fail to see the problem! (grin).

If BIAB does everything you need except notation, why not just create the song in BIAB, and export a MIDI file into a notation program. Sure it means you have to buy (or use) two programs, but they`re just 2 tools to use to get the project done.

If you were going to build a wooden box, you would need a saw and a hammer.
You wouldn`t try to cut the wood with the hammer nor use the saw to put in the nails.

What you`re asking BIAB to be is a `hammer-saw`,
It is first and foremost a music accompaniment program.
The fact that it also has some notation capabilities is just a bonus.
If those capabilities do not meet your requirements, then I would just use something that does.

If PGMusic spent a ton of time and effort on BIAB`s notation functionality, no doubt there would be similar posts to yours on this forum, lamenting that emphasis and neglecting some other. In software development, you will never please everybody.

For me, I`m just glad to have a reasonably priced program, that does MOST of what I need it to do, from a company that listens to its users and tries to accommodate their requests as best it can. For the few things I find that it WON`T do, I`ll use another `tool`.

Just my 2.1 Canadian cents worth!
LLOYD S