A good movie, is not a slide show. In each frame, one should see movement and action, but the frame should be still. A movie is made of consecutive shots, and these should be varied, between close ups, medium shots, long shots, zooms and pans. Quick shots in case of suspense, and now you closely examine, this serial for this.
Note how, in a single frame, there are main characters, and behind them, others are found moving, like in offices, etc. In scenes like a walk in the garden, you will see the branches moving, leaves moving, to give impression of breeze etc. This motion, keeps interest in the scene. Compare this with shots in other serials, and you will see, they are lengthy dialogs, without the frame changing. This is perhaps, because of certain members in the audience will find it difficult to understand the plot, as they are used to stage plays. But in international works, you will never find it.
Thus SSBN is fully following the international standards, and as many of its viewers are from educated classes, and foreign students, they instinctively gel with it, and like it, but may not be able to pin point the reason.
You can always, google search, and look for "Art of Movie Making" and other such subject.s