Bachus...your right about the busy nature of Yamaha styles which probably forces the drums to be mixed lower, but the other demo Donny uploaded had a much more present live drum mix. Maybe attributed to the usage of multiple outputs.
I wish all arrangers had multiple outputs...stereo pair for drums, stereo pair for keys, and a stereo pair for vocals and lead instruments. Or any configuration the user would like.
The only other option...which I’ve used...is midi sync to computer. Kind of a pain.