OK, here are a few rather esoteric additions.
1. The old Ulrich triple offset hopper had an unusual number of inside side sakes with corresponding rivet heads, making it correct for only one railroad, the Bessenmer & Lake Erie, which had hundreds. Some of the B&LE cars were sold to other roads like the Union in later years, but you get the idea. Does anybody know who (if anybody) has the old Ulrich dies? Could they be used to produce updated versions of this model in a lighter, more modern material, like resin?
2. Yes, we've been waiting for the new NYC caboose from Tru Line for eons. Once that arrives, is it possible that somebody can produce a kit for the NYC Big Four caboose with the wide cupola? Maybe I'm dreaming.
3. I missed the NYC L-4a 4-8-2 when BLI released it, and could kick myself. Is it possible that it could be reissued?
4. I've said time and again that we could use a Fairbanks Morse H20-44 2,000 HP end-cab road switcher, as used by UP, P&WV, AC&Y, PRR, NYC, IHB, and later by Norfolk & Western and Southwest Portland Cement. Several paint schemes can be justified, including two demonstrator schemes.
5. Then there is the Lima-Hamilton B-B switcher. Even though they came in several different horsepower ratings, they all looked about the same. They were used by Rock Island, Wabash, NYC (including one or two subsidiaries), Erie, B&O, NKP, Armco Steel Company, and possibly others.
6. A really nice "pony" truss bridge. Most models that I have seen are sorely lacking in believable details.
7. A pin-connected single track through truss bridge. Maybe this could be a modification of the Central Valley bridge. This would be ideal for lightly traveled lines or older installations.
I don't want much, do I?