Hi there Lewd,
so i've thought about it and i think both story and some naughty scenes are important(link ying and yang).
i think you should try to build up the story and allow the player to get more naughty scenes as he progresses, so at the start something happens and your mom caught you masturbating or something and it will cause her to think and get a little turned on and maybe later she will ask to see it and the scene will turn into a handjob which is good because its not too much(just a beginning that will build up as the story progresses).
so i think for now it has to be focused on building the story and building the naughtiness up slowly along with the story.
i hope this helped you get an idea of what the story could become or what path you could take when developing the game.
PS
what i noticed which a lot of people liked is that making sex with certain characters hard to get, so when you finally have sex it's like an acomplishment

it helps players grind for that scene they want to see.