cause kishi suks saskues d ****The history of Byakugan alreaded ended. No more byakugan. If there was, he would have shown it till now, at least some progress. Till now, we didn't see any improvment in Neji. I think Kishi concentrates more on Sakure, Naruto, and Sasuke. Others are not important anymore. This is only a guess.
saskue was not even suppose 2 b added in the naruto manga but
the director told kishi naruto shuold have a rival