Finally got tired of waiting and bit the bullet and watched Mary Kills People with shit AI subs.
And you know what? it's ok to watch kdramas with shit subs, i'm so used to korean vernacular by now that my mind correct the subs in real time without even noticing.

Anyway the show was okay at first but sadly stop being interested in its characters after episode 4. then it just concentrate on its theme of euthanasia, the good, the bad and everything in between.
But I'm not watching kdrams to get a lecture or watch a thesis, I'm watching for character driven stories... so great start, but meh overall.