My take, and apologies if this is derailing.

BIAB could easily be adapted to perform as an Arranger keyboard system, using a fast processor, adequate RAM and a decent SSD.
However...
Some of the currently advertised System Requirements preclude this from ever being delivered:
Quote
System Requirements for Band-in-a-Box®
Windows®: 11/10/8/7 (32 or 64-bit)
Minimum 1GB RAM (2GB+ recommended)
Minimum 1.0 GHz processor (2GHz+ multicore recommended)
I don't know anyone running Windows 7 (no longer supported by Microsoft for several years) on a 1.0 GHz processor and expecting anything from producing music.

And that's what I believe is holding this opportunity back.

Can you even start to imagine the interest that would be generated if BIAB could also operate as an Arranger System that could be used with almost any existing keyboard?

Nobody with a 1.0 GHz Windows 7 anything is purchasing the 2024 version of BIAB. Move on.

BIAB & RB2025 Win.(Audiophile), Sonar Platinum, Cakewalk by Bandlab, Izotope Prod.Bundle, Roland RD-1000, Synthogy Ivory, Kontakt, Focusrite 18i20, KetronSD2, NS40M Monitors, Pioneer Active Monitors, AKG K271 Studio H'phones