<< Best of all, no more use of ‘F5 fade by -2’ limited to a measure to measure basis. A smooth fade is one of the most necessary tools for making a song sound more realistic. >>

Just a quick comment to be sure you're aware that newer versions of BIAB that have volume automation, this limitation isn't a factor anymore. BIAB's volume automation works on all tracks except the Thru Track. The Master Track is included.
Any individual track can be volume automated and the final stereo mix that will be rendered can be volume automated.

The Master Track is capable of volume automation for any media BIAB recognizes. Regardless if the style is midi, SuperMidi, RealTracks, audio or any combination of these media types.
On this Master Track, no waveform is visible in the Audio Edit Window no matter what media type the style is, but volume automation works for muting, fade in, fade out and precise volume changes that aren't restricted to measure to measure manipulation only.

I've attached a screen shot of Master Track volume automation on an all midi Style song.

Attached Files (Click to download or enlarge) (Only available when you are logged in)
Master MIDI Volume Automation.jpg (216.71 KB, 315 downloads)
BIAB 2025:RB 2025, Latest builds: Dell Optiplex 7040 Desktop; Windows-10-64 bit, Intel Core i7-6700 3.4GHz CPU and 16 GB Ram Memory.