It makes no sense that you can't romance Joss
I know this is an old complaint, but it just doesn't, she's a great character with depth, background and looks. She has a personality. She has baggage associated with one of the most emotional quests in the entire game, she's genuinely thankful to V for his help and even flirts with them (at least male V). She also has an established family with kids and a cool brother, which would make her a more "mature" romance option to set her apart from all the other childless heathens that V is allowed to date. Also she looks hot.