We have looked into the 'vanishing girls' issue, but have not been able to replicate it.
That said, with people using hacked codes and URM, the problem could stem from anywhere.
Our initial attitude to modding was that, provided it didn't cause issues, it wasn't a problem. However, since, in our opinion, and based on the comments of them patting each other on the back, it was the modders who hacked the passwords, we have decided to disable modding in future versions and build a bigger haystack to hide the passwords.
In our opinion, their justifications sounded a lot like 'she was asking for it because her skirt was too short'. As a rule of thumb, any action that requires justification is wrong.
We are not making this game to serve as a platform for other people's software and will periodically monitor the code of modding software to ensure it remains off this game in the future.
We are trying to build something that, as far as we know, has never been done before - an open world with over a thousand girls where the player has total control over every aspect of the game.
The have been complaints about the lack of diversity of the sex scenes. For now, this is true, because we wanted to give the player the same options for all the girls. Currently the sex scenes are limited to casual outfits, but in the future, other outfits will be used for different sex scenes, so that, depending on where you are and what they're wearing, you will get a different scene for the same sex position. Please keep in mind that the game is only six months old and we have a long way to go still.