"It's too far behind as it is to be thinking that lip stick will fix it."

While BIAB has quite a few shortcomings, 2024 update proved that we can get away from modal workflow, that regenerations can be MUCH faster and content (MTP) library finally is standardized. If most known bugs fixed + features completed, redundancy minimized, workflow and GUI tightened, it should make a significant impact. If that maintenance is the "lipstick", let it be. I don't mind a pretty BIAB.

P.S. Please don't go into Live Arranger as I explained earlier why it can't be easily achieved using existing RTs/RDs/SuperMidi/Loops/Midi tracks. You will end up at the fork where you will simply either:
A) loose ability to regenerate new material or B) every time style will play differently (musically).
It's doable, but Arranger styles will have to be (very) manually produced as separate format with the "best" parts chosen. And that "best" is very subjective.