Imagine RNGeus lets you add one thing to the game. It can be a new feature, a new path, a new girl, or an improvement to something that's already in the game.
The only rule is you can't remove anything, you can only add or improve.
What are you picking?
Personally, I'd add a feature that lets us make use of our free time by going on dates with the girls and visiting different locations. Things like taking Yasuka to the onsen, Noriko to the game center, and so on.
