They only target to appeal KR player base. We liked XE combo counter (atleast in EU, but pretty sure it would have been welcomed in NA), but KR didn't so nexon removed it. We liked 8-man raids, but KR didn't so nexon removed it. We liked OS, but KR didn't so nexon removed it. We lived long without fatigue, but KR always had it so nexon added it to us too.
Buffs/nerfs on characters? its based on data KR players gather, and how well/bad they play these characters, we don't matter for those.
New outfits? based on KR tastes. If KR people like huge boobs they will keep adding volume up outfits.
Enough said, you get the idea.