I plan on changing some bits in the first chapters, mainly asking for consent to the player about talking to Ashley.
I also plan about having a social media app to display some "slice of life" moments, and adding interludes developing the "normal" parts of the relation.
But I'm also considering, in the future, greatly extending the first parts, and starting it before the player has talked to Laura about the lifestyle.
The saving system will be in the next version, it's already implemented on my side. It will work exactly how you describe it. ;)