*For the record.
Cakewalk transition to Nu Sonar.. While they re-drew UI to vector, leaving 95% of UI logic intact. As it was mentioned by their chief engineer, they left most of the legacy code. Some from decades ago. No Mac for Cakewalk/Sonar as well, even when millions of $ were dropped in it in the past 6+ years.

BIAB is FAST and overall pretty stable. As an end user I see no down sides for old code, if it allows to modernize UI and enhance workflow the right way.