Yeah, I am actually surprised that people like her. Let me ask... If she wasn't attractive would you still like her? Based on her personality alone is she still someone worth pursuing?
I don't wanna sound like a douchebag here. But I gotta be honest. I would not. But I would not pursue Nami either if I thought she was just a nice girl, but I did not find her sexually attractive.
It is the combination of super hot girl and her attitude what I find irresistible in Bella. As it is the combination of super hot redhead and loving sister what I like about Nami.
In the end, again there is little content to know what is going to happen for me. But is also find that with the content there is you just think that it is enough. I just know that I have changed my opinion of characters over visual novels. It does not happen always, but it does sometimes. Wait and see.