I was originally put off by the character models in the initial shots that I was seeing. I thought Macy's face was too skinny and pointed, for instance. Those concerns quickly dissipated once I actually started reading the VN and saw the characters in all their various facial expressions.
Macy seems to be the most robust in having different aspects of her personality; you get the bad-girl version of her with her eye-rolls and the 'eye' she sometimes shoots at Lou, and then there's how vulnerable she was at the funeral, or her laughing at the dinner table at something unintentionally insane that her sister had said.
I even like it when Denise points her fork at her sister while talking; I don't know why that amuses me, it just does.
I've seen a lot of VN's using what people would call good renders, but the expressions and body language are both completely wooden. I've found that I'm even perfectly fine with models that others have criticized, such as those from Honey Select, so long as the characters show expression and are at least posed naturally. Once I realize that the characters never smirk or are keeping their arms almost at their sides at all times . . . I'm done.
Variety is the spice of life, and I find too often that devs are just creating multiples of what they think a generic hotty should look like. This usually results in a technically pretty barbie-doll that's absolutely boring and does nothing for me.
Denise and Macy represent two completely different body-types, and are both wholly different from every other character out there. Macy is tall and skinny, and her piercings and tattoos only serve to make it more interesting from a visual standpoint. Denise is not really a character that I would have thought of as 'sexy'. She's got those braids, a gap-tooth, and she's short, which all just screams, 'loli' to me. She's also got well-developed tits and an ass for miles and mile and miles. Oddly enough, just changing her hair entirely changes my visual perspective of her.
I shit you not; there's a guy running around with a sig banner with Denise's hair done up in a bun, and Macy beating her ass like a bongo drum that was literally the deciding factor when it came to me deciding to give this VN a go.
I still think that the three 'S's are nightmare fuel. I'd fuck the shit out of Brooke, but Sara, Zara, and Sierra keep me up at night, and not in a good way.