1 - he was actually one of the few promissing characters that the Naruto manga had (in Naruto, if you don't have a sharingan, rikudou chakra, rinnegan or a demon inside you, you're not good enough)
2 - he could've made a better use of Hamura chakra than Hinata ever did and ever will. He was a...
First of all, keep in mind that Sasuke is 4x2 against Naruto.
Draw = 1 point for each
Sasuke vs. Naruto (Academy Training): Sasuke Won
Sasuke vs. Naruto (Rooftop): Draw/Interrupted- Kakashi intervenes
Sasuke vs. Naruto (VOTE1): Sasuke Won
Sasuke vs. Naruto & Kurama (VOTE2): Draw
Discuss.
He disqualifies his own son from the Chunin Exams saying he was disqualified for not using his own chakra...
(Such a funny thing for Naruto to say when most of the times he's relying on Kurama's chakra)
Then, 5 minutes later, he's totally relying on another living being's chakra.
:sdo...
Uchiha Itachi
-also known as 'The Solo God'.
-he never really lost a battle. We all know that his defeat to Sasuke was intentional.
Uchiha Sarada
-niece of The Solo God, she has the Solo blood running through her veins.
-she's Uchiha
-she inherited Sasuke's talent
-she has the higher stats...
I think everybody here agrees that these characters could easily fit in as filler characters.
Hinata
Dodai
Tenten (she kinda had potential but Kishi ****ed up)
Himawari
Udon and Moegi
Baki
Hyuga Clan
Feel free to add more characters. These are the only ones I can remember atm.