Yeah I think Neji has a lot of potential as well, I mean he was able to learn 2 of the Hyuuga clan's most strongest moves that even the main branch members have hard time with (so i read) and did that by himself, so he definatly has potential...as for sasuke, yeah he does since he is Uchiha and have Sharigan, but just think he will always be limited with that anger he has..makes him reckless