Some of the most scattered things in BIAB are track pickers. To my surprise, it is extremely awkward to choose an individual track from hundreds (or more) BIAB in-house MIDI styles.

One big annoyance with BIAB, especially with new members is GUI. I believe that having a single tabbed track picker for RT, RD, Loops and MIDI (all with previews) would get rid of many unnecessary "boxes", hiding places and multi-tier menus. Also a more intuitive approach, as all "creative" content will be in one place.

So, everything what was said in earlier replies + Midi track picker tab added.