Well that’s unfortunate, unrealistic and highly improbable are my forte. The rules of writing are more like stable observations, everything is ultimately circumstantial. I guess my biggest personal peeve is lack of detail. A lot of internet fiction I’ve read take place in a vacuum, with the setting only vaguely described and characters who lack motivations or identities. Fan fiction tends to be especially guilty of this because novice or lazy authors may just assume we know the characters and setting. Failing to fill in the blanks makes immersing the reader into the story difficult. This makes the story inaccessible to newer readers, doesn’t convey what the author has in mind, and ultimately doesn’t build upon the established lore. Which I think is the whole point of fan fiction, never mind original works that need to be engrossing right out of the gate. Other than that, basic literacy errors that should have been corrected in grade school will turn me away. Such as spelling mistaiks, poorer grammar, missplaced!punctuation, verbing, run on sentances that go on and on and on, and sentences that end before they.