I got pulled over for no front tag one afternoon and the cops were busy checking out my tint as well. It was a total shake-down. I'm not one of those people who hates police officers, but they stopped me with two cars and three officers and made comments that basically said they were looking for "cars like [mine]", asking about my friends, etc. Not that much of this is relevant, but the traffic stop was enough of a hassle that I wouldn't want a fix-it ticket. So I'd keep it legal just to avoid conflict.