I keep hoping for the Southern Tennessean - they are mostly Pullman Standard cars that were similar or the same as used on the other railroads ( with I think only the observation being unique so that Pullman sleepers could be added at Bristol, VA).
I'll but Scott a big steak dinner with all the fixins at York if he makes this one.
And perhaps if Scott feels compelled I think the Southern streamlined PS4 that pulled the Tennessean would be great too. Don't think there's demand for these? Try buying the Weaver model from 10+ years ago on eBay.