Could also expand on some of the smaller interactions too, there's so much potential built in everywhere
For example different car sex scenes in the different cars or going to different places other than the Mall with Anna can trigger something else.
Once you pay off the debt and hit the Money God acheivement, maybe you can take more holidays with different people as well.
Also use Adrian's office a bit more and let them have a few more scenes together as well.
With Tasha, could you invest in her business and the same with the clothing lady and use that to unlock scenes and premium rewards or starmaker for those characters too?