1. Contrived breakups for some ridiculous reason in the penultimate episode, so they can reconcile in the final episode.
2. A variation on this is ML or FL has to go somewhere in penultimate episode, but doesn't call or text for a year or more, because if they did they would miss the other lead too much and have to race home to them. This is probably the worst of all. So unbelievably stupid.
3. In historical dramas, sword fights with ML and comrade outnumbered by about 10 to 1, but always survive, usually by killing all the bad guys. Do they always have to be outnumbered by so much?