I will admit I wasn't a huge hinata fan in the beggining. I didn't dislike her, she just didn't have enough presence to be important, other than obviously being in love with naruto. I thought she was a sweet character and despite her blandness I admired her dedication.
She is now my favorite female character however. I hate when people talk down about her because she, aside from naruto, was one of the characters that improved the most. And at least unlike other characters (yes, I'm referring to sakura) she actually tried. she didn't stand on the sidelines and yell at others to do better. she strived for improvement and she got it.