I am looking (again) in depth creating in a orchestral mix and know that this appears because of natural mic position in a room. What I understand is that the the more reverb and less volume an instrument gets, the farther away is sounds and vica versa. Also I read the advice to use different kind of reverbs for the instrument groups when working with orchestra: For the strings which are close by the listener, use a small room; for the woodwinds which are 1 step further away, use hall reverb, and for the background instruments like brass and percussion, use cathedral reverb.
Is there anything else that can be used to imitate mic position? Or maybe is there a totaly different approach possible in GPO 4?