Yeah I understand that the synth (sound source) has the setting to respond with PB range, this is the reason I see no "minor technical issue" with melodyne conversion
Sorry if this is going round in circles, but if the pitch mod range is set by the soundsource and not the controller, then surely it's not down to Melodyne (the controller) to know the range of the synth. It will just set the range it detects as a semitone to use the full res of 8192, and for the user to set the sound sources range to correspond to that. (sorry that came out as one sentence)
I suspect that what we are doing is actually agreeing with each other