Anything but attempting 3D realism, because those attempts fail and land in the uncanny valley almost every time. Heavy stylization can be meh, but at least it's not outright revolting.
Handrawn 2D, live2, and slightly stylized 3D can be quite good.
I'm open to all styles since anyone can make good stuff in any of them. I do prefer hentai comic/cartoon with exaggerating not being bad just depends on how they do it.
Anything frame by frame and actually animated. Also, physics are great as well. Too many games have these stacked chicks with absolutely nothing bouncing/jiggling