I have 5-6 PS1 boxcars of different makes. I started comparing them to each other and to the prototypes that Seaboard Air Line had, here's what I found from maker to maker and from maker to prototype:
1) Not all doors are the same
2) Not all door hardware is the same
3) Not all underframes are the same
4) Not all underframes are mounted the same
5) Some have molded-on detail, others have separate wire detail
So I start converting, using photos for each prototype I want to model.
1) First thing was the paint jobs, had to go.
2) Next thing was decals, had to get them special made (Thank you Jerry Glow)
3) Then I had to make new doors for 4 out of 6 cars to match the prototypes
4) Of course now I need to get some new hardware for the doors. I look at what PSC has to offer and make my purchase. Last night I was ready to start applying them and guess what, Seaboard used some oddball door locking mechanisms on their Superior type doors!!! Now what do I do?
Here's the thing...once you start comparing the model to a prototype there can be many variations, even with a standard car such as a PS1, 40 foot boxcar (not to mention the PS1 50 foot boxcar!).
Where do you stop once you start making these comparisons? That is a determination made by each one of us.
I would like to see the makers produce an accurate model of an actual prototype with enough detail that it could cover most variants with no cutting or removing of detail, simply add on parts instead of moving/cutting parts off.
Of course they could (and have for the most part) make only cars that were used by 1 RR (like PRR, NYC, UP, SP,) and while that may satisfy a lot of people, it doesn't satisfy folks like me that model RRs like SAL, ACL, N&W, L&N, VGN, WM, B&O, C&O.....
If the makers kept their offerings so generic that the basic shape and size were accurate that might help AND if they ALL used STANDARDS in their production (mainly underframes/flooring/trucks so heights of couplers would stay the same), then people could at least build something more detailed from a simple design without having to hack things apart.
But most modelers these days are open-the-box types who can't/won't take the time to try building a kit or even assembling something when all the parts are in front of them. It saddens me to see a lot of people (without physical disabilities) on here on can't "model". It's like having that Shelf Queen that doesn't run. It's already broke, take it apart and find out why!!!
I don't even know if they have these kinds of "rules" when they hold modeling contests. Maybe someone who just went to the O Scale West show can enlighten me on that.
I guess the definitive answer would be, if the prototype had it, then the model ought to have it, anything else is not accurate (unless you are satisfied with it )
(Opinion and Ramblings )