We need longer hairstyles preferably middle part current styles see pics

I'm guessing it's because of clipping issues but it was always disappointing that ts4 never has long hair. My hair is passing bum bum length and I love long hair! All of my girl sims (and some boys) have long hair but of course it's cc.
I don't know if they would ever do it though because I don't see how they could get around the clipping issues since the hair is so stiff. When sims sit it would clip right though the seat with the length I'm thinking of? though I personally wouldn't mind. I just want the long hair. Even a shorter long length like the the picture you posted is better then nothing.