Not sure if this has been handled in other threads, but what do you hate most when it comes to the caracters in the games?
For me, those two topics are on the top of my list.
1: The male caracter has a telephone pole in his pants
2: The female caracters have milk jugs that normally would require wheelbearers for them to move around.
One of my biggest problems with a lot of characters in adult games is how many characters from so many games have very similar look. As a dev I've always tried to make my characters look different and unique. I think I do a pretty good job at it. So do a handful of other devs but it's extremally rare.