Bill: First off, call me Dick. It's my name, not my policy. Of course, I can be!
I think you did a good thing to post the images, and I agree with you regarding the logistics of this preservation. I'm unsure if the structure of Nassau would survive disassembly. We'll miss the classic structure and familiar role it's played.
Regarding the G5's, they deserve a non-critical topic header of their own. I'm certain both groups want the locos ready to go as much as we do, however "bashing" the groups won't get it done any faster. Bringing in some serious bucks from Pennsylvania and New Jersey would be required. If MTA is going to be "dogs in the manger" regarding our rail road, then run the two steamers where they're appreciated and bring in big tourism dollars.