Why do I find Rosa so nice? I think her hair style and design are weird, she's often pictured with a larger ass than any other pokegirls, and I don't like pantyhoses. I can't find any positive point to her, but I still think of her as generally more attractive than the other female protagonists, even though the latter have so many more features that I like.
Maybe it's because the artists who draw her are better? I don't know, it's a fucking mystery that I can't solve.