I'm not the expert here, heres a short quote from D500 regarding the NYC 2-6-6-2's from the "obscure locomotive thread".
D500 posted:
"This is actually prototypical, as the NYC did have some trackage that was fairly twisty, and needed some real power, but the big Mike and the Mohawk freighters were not comfortable there.
"It would also give us NYC fans who also like articulateds a chance to have it both ways, and for others something unusual in a road name that doesn't call Mallets to mind. And, it's a nice-looking machine."
"These should not actually be "obscure" - the NYC had over 60 2-6-6-2's, most of them like this one."
Comparing the photo of the prototype to Lionels USRA which is a N&W design or C&O ( I believe)
The NYC 2-6-6-2 might actually be shorter, the tender certainly appears shorter. The front cylinders are different and there are no classs lights on the smokebox.
Maybe if Lionel deleted the class lights it could be a "kinda.. sorta", something that a novice rivet counter like myself might find acceptable on the layout. Of corse it would have to have a NYC whistle tone, instead of an N&W hooter.
Maybe resident NYC experts will chime in i.e, D500, Norton, Hotwater, etc.