Don't get discouraged. I think this is salvageable.
-First off, think you really should play into the average employees being incredibly randy and handsy. Maybe have some of the scenes play out in passing other employees. Make it so you don't need the camera to SEE the scenes, but need the camera to progress. And to save on balance, you can explain away that they act too quick to be recorded if you don't have them riled up.
-Gotta make it so it is a lot easier to rile up the employees. It shouldn't feel like a chore to get to the porn of a porn game. It should constantly be in your face.
-Slide in a corruption meter or mechanic, lust, something like that. You don't need to make new CGs but if you put forward some dialogue that alters depending on these variables, it could make it feel like there's a lot more there. And you could even have it so that if you go too far or get one metric too high one of the employees drags you away for a night at the end of the shift.
Look forward to what you do next. But I genuinely think you can turn this one around.