>Succubus
>Vampire
>Spider Girls
>BDSM
>Monster Girls in general
>Seduction
>Villaness
>Captured Protagonist
>Erotic Torture
>Sex Wrestling (focus too much on the wrestling not enough on the sex - what we need to see more of is one girl dominating the other and attacking her breasts/pussy whilst holding her down)
>Loser gets fucked tenderly (it's always too rough and involves hair pulling and other stupid dyke shit)
>Breast Docking
>Arranged Lesbian Marriage
Just a few I'd like to see more of.