Some charasteristics in Korean drama/movie I would like people to comment on

Hello everyone.

In order to develop the plot, the major ideas in the drama/movie there has to be that specific content to lead to watchers from point A to B.

DEFINITION OF FILLER
Fillers (not to be mixed with fillers in anime) are the things that are put between these A and B. Eg. from not knowing the person to marrying them, or, from being born to being the knight who slays the dragon. That what happens between the major plot events are what are fillers. E.g. in Naruto the main thing is the fighting, and the fillers are practicing and learning new skills.
Now on to the fillers in Korean drama/movies. Before a person A marries person B, there has to be the filler, that what makes the main plot, marriage, sensible and natural.

EXAMPLES OF FILLERS
For some reasons, these fillers are generally misunderstandings, fight over power in politics, hospitals,  quarreling, fight over heritage and scandals to name a few. Some make sense, no doubt. However, some of these are quite random e.g. a person is sent to hospital only to be okay in the next episode, babies are switched after birth and one or several cars appear from nowhere attacking people.
These fillers were okay if they were somehow introduced and/or hinted in advance. However, let us say in episode 6 we are introduced person C. In the episode 7 to 11 that person causes problems. The reason, which is revealed in episode 11 was family problems. Okay, I understand. That person had social problems, but how about introducing or even hinting there might be some problems? Additionally, for some reason, this family problem is fixed as fast as it appeared. Lastly, after the problem appears and before it is solved, the people have to misunderstand each other, quarrel, lose their control and do something reckless. 

However, maybe the most extreme type of fillers are those that took place before the drama actually happens. D-DAY SPOILERS: The main characters parents where in an accident, The father died and the mother was operated. The main character´s brother operated the mother, which resulted her being in eternal coma. This results in the bad brother relationship portrayed in the drama. Okay, sure, that is quite shocking, but how about preparing this filler in advance? How about somehow hinting of this in some kind of form? Next one, the one woman talks with a "bad, corrupted" man. They just discus, and oh, they are father and daughter. That is a cool filler, but how about preparing that filler? How about telling from the beginning that they are father and sister? D-DAY SPOILERS END

The problem here is that it is possible to throw in any type of back story to almost any type of situation. I some times create these kind of fillers myself, here is one:person B causes trouble to person A.  A:s father is the brother to the banker (who is person B father) who lent money to the sister of person A, and this sister then tried to committed suicide but failed. The sister became depressed and A:s family hid from A:s the fact the main character has a sister.

THE POSSIBLE PROBLEMS
The fillers are sometimes so random, appear from nowhere and so many, that they actually become the main plot in the drama/movie, although these fillers were originally meant to fill the gaps between the major events in the drama/movie. This leads to several facts:
1. The main plot (not the fillers) becomes slow and draggy
2. The drama/movie loses its original idea, since the main plot and all the random fillers blend together to a mess. The writers basically have too much stuff in the plot they cannot decide what they should do with all the stuff.

PERSONAL OPINION ABOUT THE FILLERS
Everyone hates each other, always scream and are super depressed and gloomy. Then for a moment everything is super great, everyone is fantastic only to allow the writers to throw some new problems that will occupy the next 5, 6 episodes.I watched the new drama "Puck" (if that is the English name) and thought in advance: this is about ice hockey. This drama must have some great games, and I cannot wait to see the secret training camps. But no, again do these fillers with difficult human relationships appear and it becomes so depressing. Were you not supposed to play ice hockey?
What is the idea of fight for political power in a hospital? Just treat the patients.  NODAME CANTABILE (KOREA/JAPAN) SPOILERS Why make the decision to disband S orchestra so political and difficult? In the Japanese anime and drama they hardly discussed that subject. I believe it just ceased to exist. NODAME KANTABILE SPOILERS END.

LAST COMMENTS
People like what they like and some obviously like these random fillers. I agree that they are shocking and entertaining in some aspect, but I am not fond of them. Since someone will say this, I say it in advance: Yes,it is wrong to generalise (at least if it is something negative) and there are always exceptions However, one has to generalise in some points to see the entirety.

Thank you in advance if not for commenting, then at least reading.

These fillers were okay if they were somehow introduced and/or hinted in advance.

I wholeheartedly agree with this. I don't mind cliches, but I hate it when they introduce stuff like birth secret, amnesia or dark, hidden past in the middle of a drama simply to make it interesting without even hinting at these in early episodes.

And I think egg-mont is right. I suspect that Kdramas abound with fillers because of the live-shooting system. Even if the scriptwriters have a clear idea about their story (or had completed the script prior to shooting), the script can be rewritten anytime based on how the viewers (e.g. rating) respond to the story so far.