Steve S - I remember that original Constitution box art vividly; there's a copy of it, minus the Revell label and other text, in Dr. Graham's book. You're right: it set an impossible standard for the purchaser. I wonder if the artist had seen the kit before he did the painting. It sure looks like a painting of the real ship, which just happens to be sitting on a T-shaped stand.
I've never read a serious explanation of what produced the packaging rules for American plastic kits. Come to think of it, I really don't know what those rules are, if they exist at all nowadays. I do know there was a period (the late seventies, I think) when the words "Modele reduit" started showing up on Revell and Monogram boxes, to comply with a Canadian law that all merchandise sold in Canada had to be labeled in French and English. I think a lot of the consumer griping had to do with the fact that so many boxtop paintings featured things that weren't in the box. (Little Jimmy apparently thought that box contained not only the Spitfire, as the printing announced, but also the ME-109 that it was shooting at in the picture. Thus the fine print on so many boxes: "Contains parts to build one model.")
I can remember more than one occasion when I thought the paintings made the models look considerably more impressive than they were, with the result that I felt like I'd been ripped off. That's one reason why I tend to favor the combination approach - a painting on the top of the box, and several photos, reproduced big enough that my middle-aged eyes can decipher them, on the side.
The other day I was wondering a hobby shop and got roped in by a subject I hadn't thought about seriously in years: a 1/35 Sherman tank, by Dragon. The box has a rather garish painting on top and several photos on the sides - and the bottom of the box is covered with small photos of individual pieces, with descriptions of such things as the "slde molding" technique that hollowed out the barrel of the .50 cal. machine gun, the optional turned-aluminum main gun barrel, the photo-etched brass parts, the working springs in the suspension system, etc., etc. In this case I was not disappointed; the kit is one of the finest and most elaborate I've ever seen. I'm not sure I have the nerve to start it.
Katzennahrung - I have to tell you that I find your use of English in your posts more than a little embarrassing, because it's so good. As a product of the American public school system (and a couple of years' worth of college-level French and German many years ago), I'm often downright humiliated by the typical European's language proficiency. If I tried to communicate in a German-language web forum I'd just make a fool of myself (if I didn't unknowingly declare war on somebody first). At the university where I work now I'm in charge of the program in "public history" (that is, history as put to applied use in museums, historic sites, archives, etc.). I fought a long, uphill battle to make four semesters of foreign language a graduation requirement in the program. I eventually won that one - and the students still gripe about it. For some reason, American young people resent being told they ought to learn foreign languages, whereas European young people seem to accept that learning English is an essential part of growing up.