Pennsy domes?
Reminds me of Kato's early N-scale releases of complete (sets of 6 and 4 cars) passenger car sets for various flags for the U.S. market. Kato, recognizing that the PRR never had dome cars, substituted another pullman or coach (can't recall the specific substitution.) car in place of the dome car that was in the sets of other road names.
HOWEVER, sensing that this might not be acceptable to the entire market, they included a card which entitled the bearer to PURCHASE for a limited time a dome car in complementary PRR tuscan livry. Savvy persons took advantage of the deal, apparently, and subsequently watched the price of this never-was-such-a-car skyrocket on the secondary market!
So much for the disdain for the fantasy realm of this hobby!
"Why would you want or need fantasy schemes?" Oh, I don't know....because people who are in this hobby and have the money to spend on something that brings a smile to their face, and hours of fun to experience, might want one....or two....or three......???
BTW.....if the subject is a car of limited prototypical heritage coming in two different window sizes, why not market both as Ultradome and Ultradomer??
I know, I know.....that's gotta be the 'domest' idea ever!!
KD