Sorry if any of these suggestions are repeats, but I don't have the patience to look through hundreds of posts.
So, some things I would like to see added:
Tails, for those of us wanting to play more "furry" characters. Cat, Dog/Wolf, Cow, Rabbit and Demon. Cat, Dog, Cow and Demon would basically be the same structure with different fur/skin.
Wings, for those wanting to play demons or angels. Like with tails, could basically be the same structure with different skins.
Pupils, again for those playing "non-humans". Would like to see slit pupils, like a cat specifically, but I am sure there are others that could be added fairly easily.
Animal pattern tattoos, we already have the leopard pattern, but could add others like Tiger stripes, Snake/Lizard scales etc.
Horns, I know there is one style, but maybe a couple more styles for those wanting to play Cows and Demons.
I think that is enough for my first "please give me" post.