I don't like the new covers for the upcoming releases myself. But the 2004 versions had to have those covers, because they had to match the prequel trilogy.
Well, my opinion about the new covers:
ANH:
It looks weird with those fighters flying on a line like an ant army. Looks stupid. I also hate the floating heads, and this covers has the worst of them all. Peter Cushing and Alec Guinness looks so weird. Chewbacca stands weird, and the worst part is the explosion on the right side. And it's also using a ROTS Vader.
ESB:
First of all, the purple teint is soo disgusting and secondly having a ROTS Vaders mess things up. There's no lightsaber or laser beams to give the cover a contrast. Third, look at Luke, Han, Carrie and Yoda. They are looking at the same direction, yet Lando finds something more interesting on the other side - that's ugly, plus using the Han Solo promo shot of ANH doesn't make it better.
ROTJ:
When watching the three covers next to each other, ROTJ looks so weird, because we can only see a part of Vader's mask and on the other we see part of the body and arms. The teint around the characters are to poor made, because it's so thin, and why on earth leave out Lando?