The new k-drama "classics"?

When I first got into dramas, I remember people would always recommend "the classics" (for lack of better word): Boys Over Flowers, Full House, My Girl, You're Beautiful, My GF is a Gumiho, My Lovely Sam Soon, Secret Garden, etc. 

Nowadays, besides the previously mentioned (b/c I refuse to believe they'll ever go out of style), which dramas do you think could enter into this "classics" list?

I would say You Who Came From the Stars and Descendants of the Sun because of their impact both inside and outside Korea. Any other suggestions? 

Master's Sun is definitely a classic for me!

All the Reply dramas
Bridal Mask
Gu Family Book
Descendants Of the Sun
Missing You
Pinocchio
I Hear Your Voice
Secret
Mask
Rooftop Prince
She Was Pretty

I would say Healer, White Christmas, Kill Me Heal Me, My Love From Another Star, I Hear Your Voice, It's Okay That's Love and Descendants of the Sun.  I think that these could be considered classics because anytime that I see someone ask for recommendations for themselves or to get someone into dramas, these are some of the titles that they are given (I also recommend these titles).

Master's Sun
Princess Hours
Coffee Prince
Delightful Girl Chun Hyang