...like BG Waltz (Kentucky Waltz), BG Ballad (Faded Love) and BG Boogie (Foggy Mountain Special) styles. I think I've looked everywhere and don't see anything like these, but please tell me if I missed something

The straight-ahead bluegrass style is terrific, but I really thought I'd be getting something more flexible. Others will want this variety of styles to cover various types of songs.