I say "mixed bag" because over that quarter century there have been a fair range of new prototypes made available in the field of imported plastic. The down-side is all of it is geared for hirail and last-minute adapted for sale to us only by bolting on two-rail couplers and changing wheelsets. All the compromises for three-rail are pretty much ignored making this compromise product no more than 2-rail hi-rail; certainly not scale.
For most newcomers thats all fine but, for many of us, this product represents an opportunity, not a finished scale model by any means. I did a series that currently that's been running in Dan Dawdy's e-mag ( https://oscaleresource.com/WP/ ) since December about the first step in making both 2-rail and 3-rail product into scale product, that being the lowering of the carbodies onto the trucks.
The basic premise is that the prototype draught-gear is part of the main-frame, so couplers are fixed in height in line and centered on the vertical axis of the frame, placing the vast majority tight up to the bottom of the end of the carbody. What that means is the couplers are fixed in height and it is the trucks that need adjusted to get couplers to match a height gage. Arguably, "coupler height gage" is a misnomer; probably better thought of as a car-height gage.
The layout hosts an operations group, so there are several rosters of equipment we use to run different scenarios based on different localities and time-periods. That meant going through a roster of a couple hundred freightcars for standard couplers, standard trucks/wheelsets, and now checking all for truck height. In all that, I've even encountered a fair number of brass imports intended (theoretically) for scale usage needing lowered. The result, both in reliability and in appearance, was well worth the effort.
I'm not going to duplicate anything here with the article series, especially as Dan has rights to distribute, but show the result using hi-rail (both 3-rail and 2-rail) product and what an improvement in appearance results by first putting the couplers where they belong with respect to the frame and carbody, then lowering the car onto the trucks to properly meet the gage:
Here's an example, a Pecos River plastic 50' auto box on Yoder trucks, lowered to where it belongs, then a little weathering:









