I have a couple of things that kind of irk me when I read them and I just have to get it off my chest (lol)
They're both in the realm of story structure and I believe they should be consigned to the editing floor.
First is the use of a "Cast of Characters " at the start of a story. I'm ok with an appendix but really, why trouble the reader with an information dump when you then go on to put the same info in the actual story?
The only use i can see for a list of attributes like that are in story development in order to help the writer. It doesn't truly add to the reader's experience.
If such a list *is* considered essential, then it's particularly lazy; a little worse than the "she looked at her reflection in the mirror and took in her auburn hair, green eyes, 5' 6" frame and her 36-24-36 figure" as a device for describing a character in the story.
Second is the occasional story where the author injects an apology for an upcoming scene. If you are going to write a scene, then own the dammed thing. It makes me think that you're somehow ashamed of your work. If you don't want the scene to be there, leave it out!