Time Travelling drama

Time travelling films used to be pretty unique and interesting for viewers. I remember "Back to the future" was one of those classic time travelling movies that is still garners attention. So much attention that the korean film industry also started making films like that. I don't remember the first Korean time travelling film.
I seriously don't mind Queen In Hyun's man cuz it's just such a great drama, they did well with the organization of the time travelling medium and stuff. Plus the drama is just perfect! I love it.
Rooftop prince was one of those successful time travelling genre films so okay. But what's not okay is the why more and more of the likes of it are popping up like wild mushrooms in my backyard. I'll give you few new one's : Time Slip Dr Jin, Faith including Rooftop prince and Queen In hyun's man, oh and Operation Proposal . These are just the recent one's.
I mean yeah, of course, its still interesting now cuz it's new and they use hot actor and actress. But in time, it'll eventually get old. I mean even i get kinda bored already. While the storyline always manages to mystify the viewers, the story is always still the same. Travelling back and forth and there's romance then there's always one ending either good or bad. The good, the protagonists will be together OR not.
Yeah, that's just my opinion on the recent film "trends". There's no harm or course, it's just me, easily getting bored. Enjoy the drama anyway!