I didn't say you did, it's simply a common one. What bugs me is the presumption that only those who are what we as society traditionally consider inferior would ever have a power fantasy. Its a problem we all have where we assume that those who look better, or dress nicer, or have more, simply never feel powerless or never have an issue getting a date or any number of things. I know two guys who, in my opinion, are sexy as hell, both of them have deep rooted issues. One has body image problems as well as family problems. The other simply thinks too little of himself, has a hard time accepting compliments and suffers from depression.
The idea that these people don't have problems is just as toxic in my opinion as the idea that someone who doesn't have the typically sexy body is worthy of love or attraction. We tend to make everything us vs them and no one realizes that we all have our own struggles and that whatever we are going through, they probably have their own issue. You might still think I'm taking it too personally, but I feel like you're projecting your desire to see diversity in the wrong way. Should we maybe have more characters who don't fit ideal body types? Sure. But that doesn't mean that we shouldn't cast the guy with abs and a gorgeous smile in the power fantasy, we should simply have a power fantasy for both.
Chloe18 is a good choice imo. Chloe is made fun of for being flat as a board. She has no eyebrows to speak of as well. But aside from her, popular characters for the game, like Pizza Girl, actually do look rather plain in comparison to the more common supermodel representations we see, with PG having uneven teeth. The smart girl, who's name I can't remember for the life of me is probably one of the least attractive girls in games, yet I have plenty of fun corrupting her as Chloe and also watching her fuck her brother.
Sadly the game makes the only "fat" character it included as chloe's nemesis, as she got a spot on the cheer squad and chloe resents her for it. There is a scene involving her, but its the cheerleaders and chloe hazing her by making her use a dildo in the bathroom.