This feature on Buzzfeed has a slider mechanism whereby they show you the original, often fusty cover of a classic novel and then underneath is a recent remake. Pretty cool. In some cases (as with the Wizard of Oz), I thought there was no need to mess with a good thing. I do like the new design for Zora Neale Hurston's Their Eyes Were Watching God; but the one replacing Virginia Woolf's sister Vanessa Bell's graphic for To the Lighthouse seems a bit too literal.
George Orwell 1984 is suitably menacing, and the Kerouac On the Road is an improvement. Interesting that the old and new Edith Wharton Age of Innocence covers both feature a woman artistically rendered, but the new one pops more, even though the old one has a plaintive, period quality that's not unappealing. The new Hemingway The Old Man and the Sea is blah, very thumbs down, while the new The Lion, the Witch and the Wardrobe of C.S. Lewis just seems overdone and cheesy to me. The typography and graphics of the first To Kill a Mockingbird cover also seem far superior.