...Since you're not complaining about the character writing itself I assume that isn't your issue, but that they look simliar ish (based on your statement). Wouldn't it be the same thing as a hair style if you change hair color?
Since that's what i assume you mean when you say variety, or maybe talking about proprtions? Not sure.
Yeah, hair color, could sure use more variety, almost all of them are brunettes. Several blondes, 2 white hair, and 2 redheads, + Vanessa. Even blue bunny turned out to be blond, I was so disappointed.
I know black is the most common color IRL, but this is fantasy!
Speaking of, even Pixel's new forms, human and catgirl have tiny breasts. Wish she has a medium size, they go from small, to large, to enormous.
If you continue Lucy's storyline, it has a doggy-style pose that's aimed "upwards" and you can see the sky. You can check it in the gallery.
I forgot how much it changed, in the old days it was more like a sauna, looks wise. 100% manmade, where this one is more natural.