This game is unique in its own way and there is no point in focusing on one type of relationship. It should be enjoyable for all adult players to play.
Therefore, if the author can combine several types of relationships, that will be great. For everyone, not just those who love one type of relationship.
But, taking into account the fact that the game is supported financially mainly only by fans of F/F relationships, other types of relationships are unlikely to appear in the next versions of the game. And if they do appear, it will be in a minimal volume.
This is the situation we have with this issue so far.