Variations cost money.
"Perfection" (mythical, anyway) costs money.
This leads to a whole other thread about price increases.
Better is always better, but good enough gets things done. The "non-perfection" around us can go, for me, from irrelevant to unacceptable. The situations that really annoy me are the ones where a model is offered with some incorrect attributes that would have cost nothing to get right, or, at least, better. They can't offer every variation of every piece of rolling stock or even locomotives (especially steam) at prices anyone could pay (see above) or production schedules anyone would tolerate ("Due in 10 years! Just wait!"). Plausible substitutes are fine; reasonability is paramount.
Some of use might want to try a little actual modeling to get a desired piece. Skills can be learned. (This also teaches you humility and tolerance - rare attributes these days.)
