You sound like someone who haven't actually watched it. And judging by your list you only rate high saccharine…
Do you consider shows like Angry Mom, Mars and Mr. Sunshine "high saccharine cute drama about nothing much"? Although I do usually prefer light easy shows, just not always.
This was pretty much perfect. Characters were good and believable, writing was good, acting was great. The whole drama had a good overall message/theme. I don't have much to complain about.