Just tried pianoleo’s idea of changing the dynamic curve to 0; didn’t seem to make a difference during playback.
Is there no way to redirect the output of all instruments into one channel? I’d even be happy with everything sounding as a basic GM piano if that were an option. I’m not proficient enough on the audio/midi side of things to know if this is even possible, I just remember in Finale that even disabling the Garritan instruments (and playing back with basic midi instruments) was sometimes enough to equalize the voices’ relative volumes… basically I’m just trying to strip out all realism from the playback to have a more objective look at the harmonies.