I haven't read all these posts but in Reaper it's good as you can make
just about anything you can conceive of with scripting.
Users there like to go from one region/song section to another smoothly
https://forum.cockos.com/showthread.php?t=250841
https://forum.cockos.com/showthread.php?t=243277

This will also work from Midi Input like Conductor but with smooth transitions with RealTracks audio:


That's why I mentioned a couple of times A VST to send Tempo/Play/Stop/Loop/Continue to main Biab app from DAW
this way you could have any sort of Tab GUI setup in Reaper and Biab will follow it.
This way you are using the features already available in your DAW rather than asking for them to be implemented in Biab.
The smooth seek from section to section works with the BB Plugin in Reaper and would work with a Sync VST and Biab.

I think users are just wanting a DAW in Biab so they can do all they do in their DAW but remain in Biab.
For what I do I would like to see the BBPlugin advance, get all the code in the VST it's self,
get it generating and playing direct from the RT/RD source files,
as said this will be quicker to generate up than Biab.
Maybe some years down the track I'll come back here and find all that.