If i were to say it, maybe something that misses in almost all scenes is a post scene of every sexual act.
Like, showing the semen flowing out, like the pussy/anus gaping and it spilling, those usually make the scenes more hot imo, could be animated too.
Other things would be different angles of the act, like showing from the side, back and front all in one act.
Maybe also add a option to repeat the sex scenes by asking the characters for it, without us having to open library for that.