On the picture in the previous post, I doubt cassette was a step forward from the LP. At least not considering the version of the cassette that became the "standard"....
Back on topic: I don't mind all stickers; If they are graphically good-looking and containing some interesting information they can stay on. However, I hate price tags. If you look more carefully on the pic I posted in the original post, you see I had to struggle quite a bit to remove that one. I got it removed completely, but there's still there some adhesive left on the CD case that is really hard to remove.

The other sticker may stay....