I just thought the BB Plugin now has a sync option to start at any bar.
I can use this to go over the 255 bar limit.
over 255 Pic

If we had a sync vst for Biab you could do so many things using the DAW as the Front End.

You could set BB Plugin 1 to start at bar 1 Plugin 2 to start at bar 9 etc..
this way you can have the section tabs in Reaper, as you select that section it will play the associated BB Plugin, you could have that Plugin display only for that section, so all you will see is the chords for that section.
When you render the project it will be one file playing seamlessly.

These are common song section: