One thing I'm going to try to do, is open up some of the corruption options so there's a little more flexibility/light path potential. You can already "just" be fuck-buddies with Nicki, without being romantic. A character like Mason or Risa would be amenable to a "situationship" without monogamy, because of their personal views on sex. I still plan on adding a light sugarbaby route for Gabby, and softening Ashe's corruption route so you can get on her light corruption route without being a dick. Chapter 10 has a character imply she might be interested in a no-strings situation.
Now, are you going to be able to marry nine girls at the end? No. But, I think there will be a way to have a less serious relationship with most of the girls.