DG,
With respect...
I think that "few instances" would means one instance per organ Division not more.
One for Swell -manual I
One fro Great -manual II
One for Choir -manual III
One for Pedal
But if you need 6 stops for manual I and you have to manage 2 vi limited to 3 stops each...
It is really disturbing !
I know you will tel me to use Predefined Matrix...
They are well done and useful for existing music until Romantic time but lets try to manage
Messiean organ works with that... a tremendous work....
you will have to use many Multiple-instances for each manual and pedal to achieve what it is asked...
it is not the nature of Organ as Instrument.
Again VSL team did every thing possible to make a Violin manageable.
We are asking the same for their fabulous Pipe Organ...
It is really less complicated
Are we asking to much? I do not think so !
Sicerely