My answer is not meant to suggest it will work for anyone else.

I use BIAB as a composition and arranging tool, so I'm always tinkering. I don't even need to get to your step 2, 3, or 4 - production or post production, and I rarely even do these steps to make a composer demo I share with other musicians. [ But if I did, I would do it in my DAW.]

I would like to be comfortable staying in BIAB as long as possible as I hone ideas. The features I want are to facilitate and improve this. For example, I would love to have support for a Mackie Control Surface so I could automate the mixer faders. This is very much a DAW function, but BIAB has had support for the old Frontier Design Tranzport for decades, so they did understand at one time what I'm talking about.

I don't mean to derail another thread, so let me know if it is of value for me to write more on the subject.

BIAB 2025 Win Audiophile. Software: Studio One 7 Pro, Swam horns, Acoustica-7, Notion 6, Song Master Pro, Win 11 Home. Hardware: Intel i9, 32 Gb; Roland Integra-7, Presonus 192 & Faderport 8, Royer 121, Adam Sub8 & Neumann 120 monitors.