You are not thinking big, you are way behind, you want to get out of the 90's thinking.
Band aids and lip stick won't work. You have an old car, and you are trying to polish it up and put pin stripes on it.
Have you not seen the writing on the wall with Logic ? Look how well UJAM works, dig deeper and study how it works. I had to do a lot of explaining in the other thread how it all works as users had the wrong notion, once you understand then you can see the potential of it all, and then the penny drops, and you are out of the box.
Go with the lip stick for old Biab but put more focus into a future,
"out of the box thinking" it's called:
Apart from rendering in the plugin, integrating the MultiPicker, and adding these few lines to the .di files, is there something else in particular that is broken or that you are waiting for? I understand that you want the plugin to process wav instructions so that it can audition tracks immediately (rendering to .wav would still take as long as bbw4). I'm working on this for the future but it is a big project that will take some time. However, would it be fair to say that apart from this one significant improvement, and the few lines to add to .di files (which I'm doing now), that this plugin is working exactly as it should? If not please let me know exactly what other issues you are having with the latest version of the plugin. Thank you for the feedback!