Neji in part wanted to fight sasuke so bad in part one during the chunin exams.He even train hard but now his life deaded at a young age.We expected neji vs sasuke to be epic but i guess kishimoto know neji will not be any match for sasuke at his best.The best way to end him is by the heroic path of death.I believe hinata sister will be good enough to give us what the huuga clan true potential.Probably we shall see hinato sister in the upcomming arc after this war arc when sasuke accomplish his mission with orichimaru.