There is a great video on YouTube of Fred Teardo, the Associate Organist, playing the Finale from the Vierne Sixth Symphony. It's spectacular. I believe one of the comments about the video was "And they want to replace this organ, why?"
I feel the same way. I think it's a spectacular instrument. I've heard it many times, and it's one of my favorite organs in NYC. I understand the argument that there is only one enclosed division which makes it difficult to accompany the choir in an Anglican liturgy. Or that the organ is buried and is difficult to hear in the back of the church. Or that there are critical mechanical issues which need to be addressed. All these are valid reasons for doing something -- but replacing it entirely? They seem to think it's the only solution.
The lovely tracker instrument in the rear balcony of the church is a nice addition. Too bad it wasn't designed so that it could also be played from the main console, thus enabling the use of both organs to enhance congregational singing.
Just some thoughts.