Tom, The big boy is one railroad, the challengers are almost too. The GS-4 was built in wartime for WP, and de-skirted can be used on other railroads too. What you are missing though, is the HUGE public awareness of this engine which makes it much more marketable. Another engine that IS one railroad only is the N&W J class--but because of public awareness, also would be a big seller. There's a huge bunch of folks out there that just want to run trains, they aren't operating a scale railroad operation.
I do understand what you are saying, but by this logic the Reading T-1 that Francine is after is even better known. The Freedom Train has been over that whole country. So maybe it should be first in line??? OTOH, S gauge has plenty of 4-8-4s already. The one from AM being the best of the lot, but there are a lot on old Flyer 4-8-4s out there not to mention the various offerings from Flyonel.
I have also seen that a lot of modelers would like small steam which there hasn’t been much of; only one 2-8-0 and one 2-8-2 in new production, anything else is older Flyer. This would seem to be a ripe, untapped area. Not to mention the dire lack of freight locomotives.
I’m not a scale operator by a long shot, though I do like when the caboose road name matches the engine. I’m only trying to guess what might have large market appeal… I paged through the Steam Locomotive Cyclopedia and I still think something from the USRA would work if only because of all the different road names that used the various designs as a starting point – but that’s just me.
Tom Stoltz
in Maine