Is this genre even any good?
The typical framework for a dating sim is that you play as a character in a school, and you make choices and manage time in order to build a relationship with one or more classmates, moving from just met to friends to dating. The game side can be as simple as a visual novel that branches into one of several endings, or catering to the tastes of different crushes by spending your time in different activites. For example, maybe the blonde falls for mad guitar skills, or you have to get good grades to attract the studious one. I'm not greatly familiar with the genre, but the strength seems to be high potential for telling stories - it's mostly a visual novel after all. From a godliness perspective, it is shallow. It turns complex relationships into profiling a person and earning points. It's a brand of self-service that makes me embarrased to think about. So of course I have a game concept.
You play as a student at a Bible college. You get to know various girls through the normal mechanic of choosing various classes, extracurricular activites, and study locations. But you also divide your time with different staff people, looking for a mentor. Your biggest need is Life Purpose, and different people can unlock different purposes or help you work towards them. In the end, your best bet is to not waste time dating any of the girls, but focus on more meaningful relationships.
There are few problems with this idea. It doesn't really address the quantification of relationships, just spreads it evenly to non-romantic relationships as well. It cynically suggests that I believe my time dating in Bible college was wasteful. There may be some truth to that, but there's no need to be cynical about it. Also, the game would end when school was over, and most people have hardly begun to realize their life purposes by graduation. And it's not because they spent all their energy chasing girls. We have a life purpose built into being a Christian; be a disciple of Christ. The details are worked out throughout the entire course of life, and not set by a degree or fully shaped by a mentor. I don't like the message this game ends up with any more than custom fan service of a standard dating game. For a good story teller, there are probably many beautiful romances to be written, and one of them could take this form. But I think dating is better when it's optional.