Here's a few of mine:
Psycho SO
The psycho SO is a boyfriend,girlfriend or spouse that is connected to one of the main characters who has absolutely no redeeming value as a person and there is no reasonable explanation why they've been with each other for so long. That is, outside of the obvious out-of-story reason so the main character can hook up with a nicer, sweeter love interest and we don't feel guilty that this person got tossed aside. It speaks really ill of the partner we're supposed to care about, as well as feel really cheap like a Wrestling Heel.
Shoot the Shaggy Dog
Shaggy dog stories, where characters go on a quest revealed to be utterly pointless, feel really hollow wastes of everyone's time and it's even worse when it's just a sea of misery and we hope there's some success at the end, but nope. The Moral is "Life Sucks". I already know this lesson. There's no growth, and I feel like a chump rooting for the hero by the end. That's not to say bad ends are awful or we can't learn something from a character's defeat but there needs to be something more than just that.
Soap Boxing
Social issues are great fodder for stories, but when I feel like I'm just reading a comic book screed that should have been a long post on a subreddit or a editorial at a newspaper, we got a problem. This is usually a story infested with cheap straw-men and our hero being completely right all the time. Even when it's something I want to agree with, I just roll my eyes. This isn't rocket science. Present both cases fairly. Take the better looking arguments from real speakers, unless you're planning a character like Bane in the Dark Knight Rises who only provides cheap lip service to a cause.
Broken Aesop
If you made a whole story about how superheroics/cars/guns/knives/twinkies and are bad, perhaps you shouldn't show us the heroes using those things to save the day, over and over again. Batman v Superman is a sterling example of this problem.