If it is achieving the intended impact, it's good design not bad design. I've seen looking at direct mail response rates that a very slick polished classy piece

If it is achieving the intended impact, it's good design not bad design. I've seen looking at direct mail response rates that a very slick polished classy piece can underperform something more FUCKING LOOK AT ME MY LETTERS ARE BIG COLORFUL HERE'S CLIP ART OF A GUY HOLDING CASH!!!!!