I've listening to Kpop for a long time now and I've seen the debut of thosen of groups and we'll the more you're in Kpop the more you'll see that not to many group bring something new to the table 4th generation has begun and i have to see something that wasn't done before, i do admit that k-pop idols are more polished and everything is executed to the perfection now (it doesn't mean that old group were any less perfect ) but no company has show anything new i can literally list each new group old version
Twice ---> Girls generation
Red velvet -----> FX
Seventeen -----> Super junior
Blackpink ------> Super junior
Nct------> Exo / SHINee
G-friend ----->Apink
And now the same pattern is being repeated with 4g
Aespa-----> Fx
Itzy---> MissA
Stayc----> Wonder girls/ t-ara
Treasure-----> Exo
Txt----> SHINee
And it goes on nothing new just younger people replacing the old ones and seriously it gives of a very manufactured aspect to Kpop especially with Sm