Why change the video cover?

Has anyone else been annoyed by the frequent occurance of 20ish-plus year-old films being released (or re-released) on DVD with ALL NEW and Completely Terrible cover art?

The original VHS and DVD release of Black Rain had that classic 80s-style image of the hero - an iconic image of Michael Douglas looking like he could have beaten Sly Stallone for the lead in Cobra with all that attitude, astride his motorcycle, staring out at the viewer, with an icy-gray-blue overall color scheme if I'm remembering it right. I believe it was the original theater advertisement poster image as well.

Now comes a greatly-improved DVD release that just HAS to differentiate itself with a tasteless photo-montage of the 2 main actors. The image is completely generic and does nothing to attract the eye like the original cover did. Gone is the atmosphere, gone is the mystery, gone is the subtle beckoning to see just who that guy is behind those shades. The DVD now looks like every run-of-the-mill cop/crime/go-directly-to-video-do-not-pass-go crap releases I see all over the place.

Why are the movie studios doing this? Countless other classic images -- real art, in many cases -- have been replaced in this fashion on DVD covers. What others? Mad Max, Legend, Krull, Conan the Barbarian, Willow, Labyrinth, First Blood all jump immediately to mind. Many others shall go nameless for now, because I've forgotten them for the moment.

I would like to say that I won't be fooled into thinking that these movies are somehow fresher and newer than they were before just because they have a new cover. And I admit to having purchased movies based solely on the looks of the cover. I'm not ashamed. Yeah, I got duped into buying Future Kill that way. But "old fashioned" as they may be, I really miss those original cover images. They were far better than the dearth of imagination that is the hallmark of back-catalogue releases these days.

Thank you, and good night.