To be fair, he's only directed one other drama (eight years ago), and I don't think you can judge him on his AD…
Same l also think so we don't judge the book by it's cover it's his debut as a director in drama, he directed only one film man in love and that film is pretty popular in SK.
https://kisskh.at/article/ji-chang-wook-wi-ha-joon-and-im-se-mi-are-confirmed-for-disney-drama-the-worst-evil
Second every Actors from main cast to Supporting cast and even cameos did so good job for their Character
This drama is mostly about team Genie and their life and yoon gyeo re life struggle.
You are going to cry feel Sad,laugh overall this is my comfort drama of this year .
I will recommend you this drama if you like healing drama with dark theme and slice of life ,Romance.
And JCW deserve Daesang for this role l am watching you KBS Award .
Give the man what he deserve