Suggestion... maybe?
Are there any other "taunt" animation past the "welcome from behind"?
If not, you could add a "lift skirt, drop panty" taunt.
Also, I'm assuming that the level of horniness is determined by the amount of semen in the womb/#of sex assaults. Maybe after 500ml of semen, have the character remove a layer or two strip maybe even strip completely.
This may affect future storyline... maybe...? IDK, maybe make it optional, or just ignore me.
P.S.- Great game, looking forward to future work!