Minori is actually one of my favorites, as far as opening and closing animations go. Decisive bite on the lollipop and forgetting her opening line. I can definitely see why people wouldn't like her though, but she and Katsuragi are the only ones I really find funny.
Her openings are the best part of her, made me chuckle a few times, but everything else is pretty meh. Doesn't help that I dislike her fighting style as well, which plays quite some part in my sympathies. Maybe she grows on me, couldn't stand Yagyu or Hibari at first either, but the games do a pretty good job to make everyone likeable with time, so I reserve my final judgement for when I finish all stories.