It's like the body shape, the style, they all feel very similar so there's nothing really special that draws me to any of the girls specifically. Granted, they are all beautiful but I feel that they're copy/paste generic with the differences being too superficial to really care about or get invested in, like the chick with a goth/emo style, it's not alluring enough for me.
I have dabbled in creating A.I art so I know that it can be difficult to get consistent looks for the characters you create, I do think that using some distinct prompts such as "athletic and muscular" would be well worth it however.
A milfy character would be nice too.
I'll definitely consider adding another character that is more milfy, but I'll have to see if it works out
I doubt I would modify one of the existing characters into an athletic one, as it would mean having to recreate a load of images, which is a pain in the ass
But maybe I'll add another girl
Note that any extra characters would appear but not as often, at least with the story I have in mind
But I'll try and see what I can do
Honestly, the art is the least of my problem right now
I don't yet have an engine selected, I'm not sure if I should try Unity or Renpy, I'll have to figure that out otherwise all I'll have is the art and my ideas........