Jim,
credit goes to pipeline. He showed this a few years back.

BIAB obviously has significantly more features / tools to create arrangement compared to many competitors. And I like the concept of "companion" vsts. What Dan showed, is exactly how I use Ujam, NI, Toontrack and a few others with BIAB.
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It's great that finally we have VST3, options for Chord Track, single Library and a good progress was made on UI.
However, now is the right time for PGM to tighten up a lot of things that relate to workflow. Complete unfinished features, consistency of navigation, zoom, transport, cursor, known bugs etc. So BIAB becomes a fully modular piece of composing software that feels premium and not only "accepts" companion software, but makes entire experience more integrated / user friendly.

The most productive leap since I started using BIAB was 2025, when PGM created and curated several pinned topics on UI in wishlist. They made known that they are open to particular change, gathered focused opinions and it turned out better than expected. Vast majority of people liked new UI. I feel that rather than just throwing ideas into wishlist well, PGM has to step up and set the tone for 2027 release, just as it did in 2025.