As itsara say,if we considered 3,7. The game is gonna be more into dating Sims than an rpg kind of game,bcs this game more into the story' than the Character,the important aspect of this game is not just the npc,and the writer and creator still focusing on the main story' bcs some still wip/work in progress,so if they/them gonna focus on the npc it's gonna take time. (My opinion)
I understand your point of view, but the game already have a lot of dating mechanics, for example, the firework event which you're able to choose a person to enjoy with.
An upgrade in the NPC's page could be really useful since you could take notes about interesting things about them as you progress in the game (For example, there could be a note in Bernard's page saying he likes to go hunting on X day, and later that he suffers from lycantropy)