I really don't like her, which is not strange. I hate Mary Sues. And she doesn't need to be a warrior. You don't need to be a warrior to have a personality and be useful. Trying to make her badass failed so hard in KH2, after all.
I second this.
Because Namine's were treated like flaws. Kairi is always treated like the perfectly nice princess... even when she isn't.
Exactly. Besides, as I said before, Namine's flaws were not treated like endearing qualities.