Not always. Scaling upwards can lead to problems with resolution in a bitmapped image, or the square-cube law in the case of a vectored image.
Not really relevant, as it just becomes even more unwieldy trying to make the aircraft, essentially scenery most of the time, the right scale for figures that are a different scale in each direction you measure. You're not going to try cramming the figures aboard the aircraft, are you?
Also, less of a problem now that
Ecardmodels are updating their store.



Buy the bigger ones and shrink.