I would have to agree with this too. I am a 25 year veteran of Band in a Box. I use BIAB for what it is excellent at, that is, generating accompaniments.

I have never used Real Band - instead I use Pro Tools where I do all my audio recording and plug-in work.

I have never used the notation system - I tried it out in the beginning, found it too clumsy and stuck with Finale and more recently with Sibelius which interfaces well with Pro Tools.

I have never used the piano roll window - I used to use Cakewalk Pro which was superb, but now that it does not exist anymore, I use Pro Tools, which is less superb, but still quite good.

I never use BIAB to generate melodies or chord progressions - I compose my own.

I have never used the CD burning capability of BIAB (I didn't even know that you could do that until recently) because there are so many other programs which specialize in this.

I have sometimes generated mp3 files when making rough arrangements to evaluate and compare different styles without having to use extra programs.

What I use BIAB for is to generate MIDI and WAV files, often in several different styles to export and mix and match in Pro Tools to eventually end up with an arrangement with 16 or more tracks, not all of which are played simultaneously and some not at all, but extracting several BIAB arrangements into Pro Tools gives me the freedom and flexibility to create a sophisticated arrangement far beyond what is possible with the limited number of tracks which can reside within a BIAB arrangement. However, Band in a Box is the tool I use to create all the tracks before I add vocals or live instruments.

Having said all that, I think that BIAB serves as a relatively low cost alternative to having expensive programs such as Finale, Pro Tools, Sibelius, WaveLab, SoundForge, Nero, etc. in addition to BIAB for those who cannot afford or justify the extra expense.