>>10118432>>just generally being useless as a character
Actually, she was one of the few useful females in shounen. Without her, Light couldn't pull off a lot of shit in Death Note such as the whole thing in the Yotsuba Arc, LADIES, and continue to kill off criminals. She didn't become useless until Takada came in and that's when we saw less of her.
Misa Misa isn't the brightest crayon in the box, but she wasn't useless.