I have a suggestion regarding harem games. We fans don't like choosing who to give points to. If, in a dialogue, you have to choose whether to give points to several different LIs (i.e., give points to one and not to others), the only thing you're sure to achieve is annoyance. The only good option is to allow the player to choose whether to give points to a LI or not individualy (that is, never choose between several). And the same goes for scenes. If you're going to include two different scenes from two different LIs, make sure they can be obtained in a single playthrough. Never force players to choose between a scene with one LI or another; it's a terrible idea.