One of my pet peeves on models has been the representation of rivets - If you take a standard MS20470AD4-4 rivet (1/8 in diameter and 1/4 in length w/a 5/32 head) and reduce to 1/72 scale and put a coat of paint over it, its going to be virtually invisible from more than 6 inches away from the model - panel lines will be more noticable. especially if they overlap on the 1 to 1 model - but still very fine on the 1/72. Even Dzus fasteners would be nearly invisible - unless you are modeling a well used aircraft with dark paint scheme - the paint on the fastener becomes chipped with use and stands out because it is now lighter than the surrounding surface.
However my greatest peeve (and Airfix has always been bad about it), is the representation of fabric surfaces (in all scales) - fabric is a weave, not a random pattern - besides you run into a scale effect - take a look at the sheets on your bed - then reduce that weave by 72 - its going to disappear - real fabric (whether linen or synthetics) is installed , shrunk and then doped - if you put the minimum required amount of dope on (three coats clear, three coats aluminum), and reduce that to 1/72 scale its going to be glass smooth - the only difference between it and the surrounding metal will be the gentle sag between the supporting surfaces - no need for the squiggly worm effect. Oh, well, thanks for letting me blow off steam.
quincy