Since most of the recent Railking offerings from MTH have been re-runs and re-paints I have given up hope that they will ever make a PRR J1 or NYC Niagara. The following, however, are some suggestions that should be relatively inexpensive yet add some interest and variety to the Railking line and translate to additional sales.
1. Scullin discs on the Commodore Vanderbilt, non-streamlined Hudsons and Mohawks
2. Number boards high on boiler front for UP FEF and NKP Berkshire
3. Smoke deflectors (Elephant Ears) on Mohawk and PRR S2 Turbine
4. Add classification lights to Mohawk
5. Use UP 49er mold to make NYC Mercury
I'm sure there are others. Feel free to add to the list.