Actually, I like pictures on the sides of boxes. Your point is well taken though, if they use parts that are not in the box to spruce up the model and you are trying to figure how they got that effect.
I think in some ways I was hammered on a post I did about the new Warbirds issue by FSM. The reason I liked it was I could look at what was done and with what extra parts to make those WWII palnes look so awesome. There is a need for someone to say OK, if you build that 1:32 Revell corsair right out of the box, here is how to do it. If you want more realism, you will need to buy such and such to make the cockpit more realistic, make the engine more correct and so forth and so on. Right now, shlocks like me are stuck with a situation where until I get more experience, I have to take what I get. I simply don't have the time to do all this research, find these parts that I do not know go with the model or not, figure out paint schemes, do my job, raise 4 kids, take care of my lovely wife if you know what I mean, give praise to the Lord on and on and on .Make our lives as modelers easier. There will still be those who say, I want to do it myself and it may be wrong info in the instruction sheet. But for those of us who are shlocks, help pleeeaaaaaassssse help!!!
For instance, I just finished an Italera 1:72 F18. The kit was missing a pylon to mount a rocket. Either the kit was missing it or it is in the belly of one of my cats. So, Italera did not respond to my request for a piece. So, what did an idiot like me do? I constructed a pylon (if that is the name of it) out of two pieces of sprue. I glued them together, glued them to the wing, and mounted the rockets on them, both sides. If the navy sees it, they may actually say, hey, looks good, good idea. If you all saw it, you would fall over hit your head from laughing so hard. However, if I don't lift the model up, the rockets look good.
So, there are clearly levels of ingenuity out there. If I were a caveman, fire would have been out of the question except for what lightning hit. In terms of a wheel? Walking is more healthy anyway. Good day! Help us shlocks out Revell, Tamiya, etc.!!!