Although it's quite US-focused, I can think of quite a few UK covers that fall into these categories. The painting in a box, in particular, is one I'd like to see less...
What are your bugbears?
p.s. oh and my aunt did design my first collection, I still think it's cool though!
I’m not going to do a lot of analysis, just a list of aggravating-slash-disappointing design traps to avoid. (Feel free to provide your own examples in the comments. There are definitely more where these came from.) To save hurt feelings, I’m using mostly retro designs, but not all that retro because digital design tools actually created some of these monsters. As with everything, there are exceptions to some of these that look amazing, despite ignoring my advice. (Point me and I will update the post with a few.)