I think that this is where the GM-centric approach of PG music tends to bite themselves in the behind - the 'cheesiness' comment.

What PG should do is provide some MIDI-only accompaniments rendered to audio included with BIAB, but where there's been choice VSTi selection done for all of the parts - perhaps this conflicts with Realtracks a bit, I don't know.

Some killer drum kits used - perhaps Steven Slate drums, Trillian used for bass lines, NI B4 or similar for organ parts, Pianoteq for piano parts, etc.

The problem there is that quickly the costs to have non-cheesy sounds rise far above what BIAB costs if you include the expensive VSTi or outboard gear. So, while some complain that the sound quality category got a low score, it is what it is unless one supplements with less cheesy sounding software/hardware.